Verified Test Bank Ch6 Demand And Elasticity - Microeconomics Principles and Policy 14e | Test Bank by Baumol by William J. Baumol. DOCX document preview.

Verified Test Bank Ch6 Demand And Elasticity

Indicate whether the statement is true or false.

1. A vertical demand curve has an elasticity of demand equal to zero.

 

a. 

True

 

b. 

False

2. Two goods with a low cross elasticity of demand are competing in the same market.

 

a. 

True

 

b. 

False

3. A seller who wishes to increase the revenues should always increase the price of the product.

 

a. 

True

 

b. 

False

4. Total expenditure equals price times quantity.

 

a. 

True

 

b. 

False

5. The value of the price elasticity of demand for a straight-line demand curve starts with low elasticity values at high prices and has high elasticity values at low prices.

 

a. 

True

 

b. 

False

6. If demand is elastic, a rise in price will decrease total expenditure.

 

a. 

True

 

b. 

False

7. Necessities such as food and shelter have inelastic demand.

 

a. 

True

 

b. 

False

8. Perfectly inelastic demand curves are vertical.

 

a. 

True

 

b. 

False

9. If demand is unit elastic, then a 10 percent increase in price will lead to a 10 percent drop in quantity demanded.

 

a. 

True

 

b. 

False

10. If demand is inelastic, a drop in price will raise total expenditure.

 

a. 

True

 

b. 

False

11. A unit-elastic demand curve will be concave toward the origin .

 

a. 

True

 

b. 

False

12. A buyer’s response to a change in income is an example of a “change in demand.”

 

a. 

True

 

b. 

False

13. A demand curve with an elasticity of 1.0 is a unit-elastic demand curve.

 

a. 

True

 

b. 

False

14. Demand elasticity equals quantity times price.

 

a. 

True

 

b. 

False

15. A rise in price will always result in an increase in the total amount that consumers spend on a product.

 

a. 

True

 

b. 

False

16. A decrease in the price of a good will cause a movement along the demand schedule to a higher quantity demanded.

 

a. 

True

 

b. 

False

17. When the goods of competing companies are identical, consumers have no reason to prefer one product over the other, so the demand curve for each manufacturer will be perfectly elastic.

 

a. 

True

 

b. 

False

18. A demand curve with an elasticity of 1.0 is said to be an elastic demand curve.

 

a. 

True

 

b. 

False

19. As one moves down a straight-line demand curve, the elasticity increases.

 

a. 

True

 

b. 

False

20. The slope of the demand curve conveys all the useful information about elasticity.

 

a. 

True

 

b. 

False

21. Elasticity computations related to demand carry a minus sign to show that the demand curve is negatively sloped.

 

a. 

True

 

b. 

False

22. The difference between slope and elasticity is that slope measures absolute change and elasticity measures percentage change.

 

a. 

True

 

b. 

False

23. Elasticity is a measure of the responsiveness of change in quantity demanded to a change in price.

 

a. 

True

 

b. 

False

24. The quantity demanded in a market depends on many things, but the concept of elasticity focuses on the effect of changes in the price of the good.

 

a. 

True

 

b. 

False

25. Since an individual spends a small share of the income on salt, the elasticity of demand is likely to be low.

 

a. 

True

 

b. 

False

26. The unit-elastic demand curve bends in the middle toward the origin of the graph and at either end moves closer to the axes.

 

a. 

True

 

b. 

False

27. If there are many close substitutes available for a good, its elasticity of demand will be higher.

 

a. 

True

 

b. 

False

28. The elasticity of a demand curve at any point can be ascertained by its steepness.

 

a. 

True

 

b. 

False

29. If a product constitutes a large portion of a consumer’s income, demand will be more inelastic.

 

a. 

True

 

b. 

False

30. Historical demand curves are always suspect because their demand curves are likely to have shifted over time.

 

a. 

True

 

b. 

False

31. A line that is perfectly elastic has an elasticity of demand of zero.

 

a. 

True

 

b. 

False

32. Elasticity of demand is likely to be higher for less-expensive goods, other things being equal.

 

a. 

True

 

b. 

False

33. Using historical statistics is likely to produce accurate estimates of demand curves since such studies have large amounts of data to draw on.

 

a. 

True

 

b. 

False

34. All straight-line demand curves have the same elasticity value since the slope is constant.

 

a. 

True

 

b. 

False

35. Elasticity of demand is another way to measure slope.

 

a. 

True

 

b. 

False

36. The elasticity of a straight-line demand curve is the same as its slope.

 

a. 

True

 

b. 

False

37. The price elasticity of demand measure is generally stated as an absolute value.

 

a. 

True

 

b. 

False

38. If demand for a seller’s product is elastic, a price increase will decrease total revenue.

 

a. 

True

 

b. 

False

39. Price elasticity of demand is a numerical measure of how much quantity demanded rises as price falls or quantity demanded falls as price rises.

 

a. 

True

 

b. 

False

40. Elasticity of demand is calculated using percentage changes in both price and quantity.

 

a. 

True

 

b. 

False

41. The elasticity of demand is determined partly by whether the good is a necessity or a luxury.

 

a. 

True

 

b. 

False

42. Perfectly elastic demand curves are vertical.

 

a. 

True

 

b. 

False

43. Computations of the price elasticity focus on the calculated magnitude due to of the law of demand.

 

a. 

True

 

b. 

False

44. A fall in the price of a competing product will produce an outward shift in the demand curve for most products.

 

a. 

True

 

b. 

False

45. Cross elasticity of demand measures the responsiveness of the quantity demanded of one good to a change in the price of another good.

 

a. 

True

 

b. 

False

46. An accurate demand curve can be derived by examining the quantities of a good that are sold over time as the price varies.

 

a. 

True

 

b. 

False

47. If the reciprocal of the slope of a demand curve is calculated, this value is equal to the price elasticity of demand for that good.

 

a. 

True

 

b. 

False

48. A price increase will always cause a firm’s revenue to fall because they will sell less of the good.

 

a. 

True

 

b. 

False

49. Whenever the elasticity value for a demand curve is greater than zero, then the demand is labeled as “elastic.”

 

a. 

True

 

b. 

False

50. As one moves down a straight-line demand curve, the elasticity decreases.

 

a. 

True

 

b. 

False

51. A straight-line demand curve has the same elasticity throughout its length.

 

a. 

True

 

b. 

False

52. If an increase in quantity demanded of a product reduces the quantity demanded of another, then the two goods are said to be substitutes.

 

a. 

True

 

b. 

False

53. If price goes up 20 percent and quantity demanded declines by 10 percent, total revenue will rise.

 

a. 

True

 

b. 

False

54. Elasticity of demand equals the ratio of the percentage change in the price of a good to the percentage change in the quantity demanded.

 

a. 

True

 

b. 

False

55. As one moves down a straight-line demand curve away from the vertical axis, demand becomes less elastic and then inelastic.

 

a. 

True

 

b. 

False

56. Buyers’ expenditures and sellers’ revenues are always identical.

 

a. 

True

 

b. 

False

57. If demand is elastic, an increase in price will increase total revenue.

 

a. 

True

 

b. 

False

58. A demand curve with unit elasticity can never touch either the vertical or horizontal axes.

 

a. 

True

 

b. 

False

59. Elasticity of demand equals the ratio of the percentage change in the quantity demanded to the percentage change in the price of the good.

 

a. 

True

 

b. 

False

60. When price falls, demand rises.

 

a. 

True

 

b. 

False

61. Knowing the value of the cross elasticity of demand allows us to distinguish between inferior goods and normal goods.

 

a. 

True

 

b. 

False

62. The elasticity formula solves the units problem because percentages are unaffected by the units of measure.

 

a. 

True

 

b. 

False

63. The value of zero is used to distinguish between elastic and inelastic price elasticity of demand for a product; so, if the elasticity is greater than zero, it is elastic and if it is less than zero, then it is inelastic.

 

a. 

True

 

b. 

False

64. The elasticity of any demand curve is the same as its slope.

 

a. 

True

 

b. 

False

65. The market demand curve shows how the quantity demanded of a product, during a specified time period, changes as the price of that product changes.

 

a. 

True

 

b. 

False

66. If a study shows that two goods have a high negative cross elasticity of demand value, then the two goods are competing in the same market.

 

a. 

True

 

b. 

False

67. The ratio of the percentage change in quantity demanded to the percentage change in income is known as the cross elasticity of demand.

 

a. 

True

 

b. 

False

68. Since housing generally represents a large part of most household budget, the elasticity of demand for housing is likely to be large.

 

a. 

True

 

b. 

False

69. A negative cross elasticity indicates that two goods are complements.

 

a. 

True

 

b. 

False

70. A price increase will always increase a firm’s revenue.

 

a. 

True

 

b. 

False

71. If demand is unit elastic, then a 10 percent increase in the price will lead to a 10 percent increase in quantity demanded.

 

a. 

True

 

b. 

False

72. If seller increases the price of the good and the total revenue increases, this implies that the demand for the product is inelastic.

 

a. 

True

 

b. 

False

73. If seller increases the price of the good and the total revenue increases, this implies that the demand for the product is elastic.

 

a. 

True

 

b. 

False

74. A tax on cigarettes can be expected to reduce teen smoking more than it reduces adult smoking.

 

a. 

True

 

b. 

False

75. A positive value for the cross elasticity of demand between two good implies that these two goods are substitutes.

 

a. 

True

 

b. 

False

76. If soft drink brands are close substitutes for each other, this implies that the price elasticity for individual brands would be low.

 

a. 

True

 

b. 

False

77. Cross elasticity of demand could be used to measure the responsiveness of the quantity demanded of swimming pools to a change in the price of picnic tables.

 

a. 

True

 

b. 

False

78. If demand is elastic, an increase in price will decrease total revenue.

 

a. 

True

 

b. 

False

79. Necessities, such as food and shelter, are product purchases that consumers are sensitive to, so the demand is elastic for these goods.

 

a. 

True

 

b. 

False

80. The law of demand states that a lower price increases the amount of a commodity that people are willing to buy.

 

a. 

True

 

b. 

False

81. The demand curve depicts quantities demanded that have been gathered as prices have changed over time.

 

a. 

True

 

b. 

False

82. If a demand curve is unit elastic, then P times Q will remain constant when P changes.

 

a. 

True

 

b. 

False

83. A horizontal demand curve is perfectly elastic because a change in price will induce an infinite change in quantity demanded.

 

a. 

True

 

b. 

False

84. Two goods are substitutes if a decrease in the price of one raises the quantity demanded of the other.

 

a. 

True

 

b. 

False

85. Price elasticity of demand can be written as percentage change in Q divided by percentage change in P.

 

a. 

True

 

b. 

False

86. The sign of the elasticity computation is important because the value of the price elasticity can be negative or positive.

 

a. 

True

 

b. 

False

87. A horizontal demand curve is perfectly elastic because a change in price will not induce a change in quantity demanded.

 

a. 

True

 

b. 

False

88. The elasticity of demand for gasoline is likely to be relatively low in the short term and higher as the period of time gets longer.

 

a. 

True

 

b. 

False

89. If demand for a seller’s product is elastic, a price decrease will increase total revenue.

 

a. 

True

 

b. 

False

90. A straight-line demand curve has an elasticity that becomes smaller as we move from left to right along the schedule.

 

a. 

True

 

b. 

False

91. As a price change persists over a long period of time, we should expect the demand elasticity to fall.

 

a. 

True

 

b. 

False

92. If the price changes for a good for which the demand is perfectly inelastic, the response will be infinitely large.

 

a. 

True

 

b. 

False

93. Elasticity of demand is calculated by dividing the change in quantity by the change in the price of a good.

 

a. 

True

 

b. 

False

94. Total expenditure equals price times elasticity.

 

a. 

True

 

b. 

False

95. Income elasticity of demand describes how change in income affects the quantity demanded of a good.

 

a. 

True

 

b. 

False

96. Demand curves often do not remain stationary; they shift because of changes in other variables.

 

a. 

True

 

b. 

False

Indicate the answer choice that best completes the statement or answers the question.

97. The demand for French Roast coffee is likely to be

 

a. 

elastic.

 

b. 

inelastic.

 

c. 

unit elastic.

 

d. 

perfectly inelastic.

98. In 1975, New York City increased regulated taxi fares by 17.5 percent and expected taxi revenue to increase a like amount. The taxi commission believed taxi demand was

 

a. 

unit elastic.

 

b. 

inelastic.

 

c. 

elastic.

 

d. 

perfectly inelastic.

99. If a firm increases its prices when the demand is inelastic, then the firm will see

 

a. 

an increase in revenues.

 

b. 

a decrease in revenues.

 

c. 

no change in revenues.

 

d. 

no effect on the sales of its product.

100. Would a profit-maximizing firm sell where demand is inelastic?

 

a. 

No, this would not follow the rule of MC = MR.

 

b. 

No, the firm could not profitably raise price.

 

c. 

Yes, the firm could profitably lower price to attract sales.

 

d. 

Yes, in this case there are few substitutes for the good.

101. A relatively large increase in the cost of electricity would likely

 

a. 

result in a large increase in the use of gas for home use immediately.

 

b. 

cause an immediate large decline in the use of electricity.

 

c. 

increase the use of gas and decrease the use of electricity after a time lapse.

 

d. 

cause an equal reduction in the use of electricity immediately.

102. A correct formula (dropping all minus signs) for the calculation of the elasticity of demand between point Q1, P1 and point Q2, P2 is

 

a. 

[(P2 − P1)/(P2 + P1)]/[(Q2 − Q1)/(Q2 + Q1)].

 

b. 

[(P2 − P1)/P1]/[(Q2 − Q1)/Q1].

 

c. 

[(Q2 − Q1)/(Q2 + Q1)]/[(P2 − P1)/(P2 + P1)].

 

d. 

[(Q2 − Q1)/Q2)]/[(P2 − P1)/P2].

103. A demand curve to remain unit elastic along its entire length should

 

a. 

cross the X axis.

 

b. 

touch the X axis but not the Y axis.

 

c. 

never touch either the X or the Y axis.

 

d. 

touch the Y axis but not the X axis.

104. Demand is said to be price elastic at a point on a demand curve if a

 

a. 

1 percent rise in price reduces the quantity demanded by more than 1 percent.

 

b. 

1 percent rise in price reduces the quantity demanded by less than 1 percent.

 

c. 

1 percent rise in price reduces the quantity demanded by more than 10 percent.

 

d. 

10 percent rise in price reduces the quantity demanded by less than 10 percent.

105. When Johanna cut prices in her jewelry store by 20 percent, the dollar value of her sales fell by 20 percent. This indicates that

 

a. 

demand was elastic.

 

b. 

demand was inelastic.

 

c. 

demand was unit elastic.

 

d. 

the demand curve was vertical.

106. The relationships between elasticity and total revenue hold because

 

a. 

total revenue equals price divided by quantity demanded.

 

b. 

total revenue equals price times quantity demanded.

 

c. 

a drop in price has two opposing effects on the two components of the formula.

 

d. 

both b and c are true.

107. Certain goods are related such that an increase in the price of one good decreases the quantity demanded of the other. These goods are

 

a. 

complements.

 

b. 

substitutes.

 

c. 

luxury goods.

 

d. 

competing goods.

108. Which of the following is more likely to be the price elasticity of demand for the snake bite treatment antivenom?

 

a. 

Highly inelastic

 

b. 

Unit elastic

 

c. 

Elastic

 

d. 

Perfectly elastic

109. Julia knows that the price elasticity of movie rentals is 3. She knows, therefore, that if she raises her price from $2 to $2.50, her rentals will drop by approximately

 

a. 

150 percent.

 

b. 

100 percent.

 

c. 

75 percent.

 

d. 

33 percent.

110. Elasticity provides a guide to both

 

a. 

market stability and change in revenue as price changes.

 

b. 

responsiveness of quantity demanded to a change in price and market stability.

 

c. 

responsiveness of quantity demanded to a change in price and change in revenue as price changes.

 

d. 

technological change and change in revenue as price changes.

Figure 6-8

111. Libya sold more crude oil in 1985 than it sold five years earlier, but revenues were 17 percent less. Which graph in Figure 6-8 is consistent with this set of facts?

 

a. 

1

 

b. 

2

 

c. 

3

 

d. 

4

112. As a result of a decline in interest rates and a rise in household income, the demand curve for housing has shifted to the right, but has retained the same slope. Consequently, the elasticity of demand for housing

 

a. 

has declined.

 

b. 

has increased.

 

c. 

has remained unchanged.

 

d. 

cannot be compared.

113. Two economists from Ohio University estimated that the demand curve for kerosene in Indonesia was such that a 10 percent increase in the price reduced the quantity demanded by 2.2 percent and that a 10 percent increase in the price of electricity increased the demand for kerosene by 1.6 percent. This indicates that (i) the demand for kerosene is price inelastic and (ii) kerosene and electricity are substitutes. Which of these two statements is correct?

 

a. 

i and ii

 

b. 

i not ii

 

c. 

ii not i

 

d. 

neither i nor ii

Figure 6-5

114. In Figure 6-5, if price falls from point A to point B along the unit-elastic demand curve,

 

a. 

total expenditure remains unchanged.

 

b. 

total expenditure increases.

 

c. 

total expenditure decreases.

 

d. 

total expenditure first increases and then declines.

115. To avoid an increase in the local property tax, Sullivan County, New York, proposed a 2 percent hotel tax, which presumably would be passed on to tourists. The hotel industry argued that the tax would hurt hotel business. They are really arguing that

 

a. 

tourist and convention demand is inelastic, so hotel bookings will decline.

 

b. 

tourist and convention demand is very elastic, so hotel bookings will decline.

 

c. 

they would prefer a property tax increase instead.

 

d. 

it is unfair to tax people who do not live in the area.

Figure 6-2

116. Using Figure 6-2, calculate the price elasticity of demand (dropping all minus signs) between P = 4 and P = 6.

 

a. 

3.0

 

b. 

0.33

 

c. 

0.40

 

d. 

1.25

117. A perfectly elastic demand curve for a firm

 

a. 

is represented by a vertical line.

 

b. 

means that with every unit price increase there will be a unit decrease in demand.

 

c. 

is formulated by P × Q = a constant, for all prices and quantities.

 

d. 

indicates that any increase in price will eliminate all purchases of its product.

118. Along a straight-line demand curve, the

 

a. 

slope is constant.

 

b. 

ratio P / Q constantly changes.

 

c. 

elasticity grows much smaller toward the right-hand end.

 

d. 

All of the responses are correct.

119. If the price elasticity of demand for smart watches is 1.4 (dropping the minus sign), then a 50 percent increase in the price of smart watches will lead to

 

a. 

the sale of 200 additional smart watches.

 

b. 

the sale of 125 percent fewer smart watches than before.

 

c. 

the sale of 70 percent fewer smart watches than before.

 

d. 

the sale of 25 percent fewer smart watches than before.

120. Scientific evidence suggests that consumption of foods rich in fiber lowers cholesterol. As a result, the demand for bran increases at every price by 5,000 bushels and the supply curve for bran is perfectly price elastic. The quantity of bran consumed will

 

a. 

not change.

 

b. 

change unless the demand curve is perfectly inelastic.

 

c. 

rise by exactly 5,000 bushels.

 

d. 

not rise by exactly 5,000 bushels unless the demand curve is perfectly inelastic.

121. Suppose that Carol owns a property with a mineral spring. It costs zero for Carol to sell water to customers since buyers come to her property and bring their own bottles and fill them themselves. If Carol wants to maximize her profits from the sale of her mineral water, she should choose the output level

 

a. 

where the demand curve for water hits the vertical axis.

 

b. 

where demand is inelastic.

 

c. 

where demand is unit elastic.

 

d. 

demand is exhausted.

122. If the demand curve is vertical, the elasticity is

 

a. 

1.0.

 

b. 

0.0.

 

c. 

0.5.

 

d. 

infinite.

123. Hot dogs and hot dog buns are found to be related by the cross elasticity of demand. If they are complementary goods, the cross elasticity will be

 

a. 

positive.

 

b. 

equal to zero.

 

c. 

negative.

 

d. 

unknown.

124. Along the elastic portion of a demand curve, the

 

a. 

change in price will always be greater than the change in quantity demanded.

 

b. 

percentage change in quantity demanded will be less than the percentage change in price.

 

c. 

change in price will always be less than the change in quantity demanded.

 

d. 

percentage change in price will be less than the percentage change in quantity demanded.

125. Suppose that the supply of insulin is perfectly elastic and the demand for insulin perfectly inelastic. Then the result of an excise tax would be

 

a. 

a significant increase in government revenue and a significant decrease in the quantity consumed.

 

b. 

a significant decrease in the quantity consumed with no change in government revenue.

 

c. 

a significant increase in government revenue and no change in the quantity consumed.

 

d. 

no increase in government revenue and no change in the quantity consumed.

126. A decrease in the price of rice from 50 cents to 40 cents a pound increases consumption from 16 to 20 tons a week in Gainesville and from 160 to 200 tons in the larger city of Miami. The elasticity of demand for rice is

 

a. 

greater in Miami than in Gainesville, even taking into account the population difference.

 

b. 

greater in Gainesville than in Miami in spite of the population difference.

 

c. 

equal in Gainesville and Miami regardless of the population difference.

 

d. 

impossible to compare because of the population difference.

127. The price of an airline ticket rises as the amount of time between purchase and flight departure gets smaller. The airlines base the policy on the assumption that

 

a. 

consumers are not aware of airline prices.

 

b. 

consumer demand is unrelated to prices.

 

c. 

consumer demand becomes more elastic as departure time approaches.

 

d. 

consumer demand becomes less elastic as departure time approaches.

128. At $5 per cup, customers will buy 8 cups of coffee per week. At a price of $3, consumers are willing to buy 12 cups per week. The elasticity of the market demand curve for coffee between P = $5 and P = $3 (dropping all minus signs) is

 

a. 

0.40.

 

b. 

1.0

 

c. 

1.25.

 

d. 

0.80.

129. Cross elasticity of demand for

 

a. 

substitutes will normally be positive.

 

b. 

complements will normally be positive.

 

c. 

substitutes will normally be negative.

 

d. 

complements will normally be infinite.

130. If the demand curve for a good is unit elastic, then total expenditure will _____ as the price of the good decreases.

 

a. 

remain constant

 

b. 

fall

 

c. 

rise

 

d. 

go to zero

131. Compared to the demand for coffee, the market demand for French Roast coffee is likely to be

 

a. 

more elastic.

 

b. 

more inelastic.

 

c. 

perfectly elastic.

 

d. 

perfectly inelastic.

132. If both matches and automobile prices increase by 10 percent, consumers will likely buy

 

a. 

fewer matches and approximately the same quantity of automobiles.

 

b. 

approximately the same quantity of matches and fewer automobiles.

 

c. 

fewer matches and fewer automobiles.

 

d. 

approximately the same quantity of both matches and automobiles.

Figure 6-4

133. Based on Figure 6-4, it can be determined that total expenditure ____ as price falls from P = 6 to P = 4.

 

a. 

falls

 

b. 

remains constant

 

c. 

rises

 

d. 

rises by more than $12

134. If the price of apples decreases by 2 percent and causes apple consumption to increase by 4 percent, the price elasticity of demand is ____, indicating the demand is ____.

 

a. 

2; elastic

 

b. 

2; inelastic

 

c. 

0.5; elastic

 

d. 

0.5; inelastic

135. The price elasticity of a vertical demand curve is always

 

a. 

infinitely large.

 

b. 

zero.

 

c. 

one.

 

d. 

increasing as price increases.

136. The elasticity of supply is calculated by

 

a. 

determining the slope of the supply curve.

 

b. 

dividing the absolute change in quantity supplied by the absolute change in price.

 

c. 

dividing the percentage change in quantity supplied by the percentage change in price.

 

d. 

dividing the percentage change in price by the percentage change in quantity demanded.

137. A good will tend to be more price elastic if it

 

a. 

is a luxury good.

 

b. 

has no close substitutes.

 

c. 

is a small part of the household budget.

 

d. 

is a necessity.

138. Which of the following goods will have the most elastic demand at any time?

 

a. 

Coffee

 

b. 

Gasoline

 

c. 

Restaurant meals

 

d. 

Insulin

139. Historical data on prices and quantities sold do not provide the basis for drawing an accurate demand curve because

 

a. 

reporters who gather these data are often wrong.

 

b. 

factors other than price may change over time.

 

c. 

they do not include measures of price close to the quantity axis.

 

d. 

they sometimes tend to be clustered around one point.

Figure 6-4

140. In Figure 6-4, total expenditure ____ as price falls from P = 12 to P = 10.

 

a. 

falls

 

b. 

remains constant

 

c. 

rises

 

d. 

rises by more than $12

141. As we move down a straight-line demand curve, the price elasticity becomes

 

a. 

larger.

 

b. 

smaller.

 

c. 

larger and then smaller.

 

d. 

smaller and then larger.

Figure 6-9

142. In 1983, government price supports raised the price of sugar above its equilibrium value. Which graph in Figure 6-9 illustrates the impact of sugar price supports on the sugar substitute fructose?

 

a. 

1

 

b. 

2

 

c. 

3

 

d. 

4

143. The price elasticity of new automobile purchases is about 1.2. This implies that an increase of $1,000 on a $10,000 automobile will

 

a. 

reduce the number of autos sold by approximately 1.2 percent.

 

b. 

increase the consumer expenditures on autos by approximately 1.2 percent.

 

c. 

reduce the number of autos sold by approximately 12 percent.

 

d. 

increase consumer expenditures on autos by approximately 12 percent.

144. A price cut will increase the revenue a firm receives if the demand for its product is

 

a. 

elastic.

 

b. 

inelastic.

 

c. 

unit elastic.

 

d. 

straight elastic.

145. The elasticity measure that has been employed by the courts to assess the degree of market competition is

 

a. 

price elasticity of demand.

 

b. 

income elasticity of demand.

 

c. 

cross elasticity of demand.

 

d. 

inverse elasticity of demand.

146. The price elasticity of a horizontal demand curve is always

 

a. 

infinitely large.

 

b. 

zero.

 

c. 

one.

 

d. 

increasing as price increases.

147. The demand for potatoes at current prices is likely to be

 

a. 

elastic.

 

b. 

inelastic.

 

c. 

unit elastic.

 

d. 

perfectly elastic.

148. Big Alice Ice Cream Parlor reduced its price of an ice cream cone from $1 to 90 cents. Sales consequently increased from 1,000 cones per week to 1,050 cones per week. The approximate price elasticity is

 

a. 

0.20.

 

b. 

0.46.

 

c. 

2.16.

 

d. 

5.00.

149. If the price of gasoline rises by 20 percent and consumption of gasoline falls 5 percent,

 

a. 

demand is elastic.

 

b. 

demand is unit elastic.

 

c. 

demand is inelastic.

 

d. 

elasticity of demand cannot be calculated.

Figure 6-3

150. In Figure 6-3(a), demand is

 

a. 

perfectly elastic.

 

b. 

perfectly inelastic.

 

c. 

unit elastic.

 

d. 

fixed at one particular quantity.

Figure 6-2

151. From Figure 6-2, we can determine that demand is ____ between P = 12 and P = 10 and ____ between P = 6 and P = 4.

 

a. 

elastic; elastic

 

b. 

elastic; inelastic

 

c. 

inelastic; elastic

 

d. 

inelastic; inelastic

152. Elasticity

 

a. 

deals with percentage changes in price and quantity demanded.

 

b. 

employs percentage changes calculated in terms of average values of the prices and quantities at issue.

 

c. 

is generally stated in absolute value.

 

d. 

All of the responses are correct.

153. The term “unit elasticity” is used to describe a situation in which a rise in price is accompanied by

 

a. 

a fall in total expenditure.

 

b. 

a rise in total expenditure.

 

c. 

constant total expenditure.

 

d. 

a unit decrease in total expenditure.

154. The relationship between a change in consumer income and a resulting change in demand for a good is

 

a. 

demand elasticity.

 

b. 

income elasticity of demand.

 

c. 

cross elasticity of income demand.

 

d. 

supply elasticity.

155. If the elasticity of demand for cigarettes is 0.4, then an increase in the price of a pack of cigarettes from $5.00 to $6.00 would reduce quantities demanded by about

 

a. 

7 percent.

 

b. 

40 percent.

 

c. 

42 percent.

 

d. 

220 percent.

156. Chicken and fish are substitutes. Therefore, the cross elasticity of demand between chicken and fish is

 

a. 

negative.

 

b. 

positive.

 

c. 

zero.

 

d. 

Any of the above is possible.

157. If the cross elasticity of demand for potato chips and pretzels equals 1.5,

 

a. 

potato chips and pretzels must both be luxury goods.

 

b. 

either potato chips or pretzels must be a luxury good, and both may be luxury goods.

 

c. 

potato chips and pretzels must be substitutes.

 

d. 

potato chips and pretzels must be complements.

158. At $6 per steak, consumers are willing to buy two steaks. At a price of $2, consumers are willing to buy six steaks. The elasticity of the market demand curve between P = $6 and P = $2 (dropping all minus signs) is

 

a. 

0.33.

 

b. 

1

 

c. 

2

 

d. 

4

159. Along a perfectly elastic demand curve,

 

a. 

the slope is always zero.

 

b. 

the price elasticity of demand is 1.

 

c. 

consumer purchases will not respond at all to a change in price.

 

d. 

All of the responses are correct..

160. A demand curve is described as perfectly inelastic if

 

a. 

the same quantity is purchased regardless of price.

 

b. 

the same price is charged regardless of quantity sold.

 

c. 

neither price nor quantity demanded ever change.

 

d. 

only quantity demanded can change.

161. If the marginal cost of producing vanity license plates is virtually zero (by prison inmates with little else to do), then states would maximize their profits on plate sales at the point on a linear demand curve where

 

a. 

demand is inelastic.

 

b. 

demand is elastic.

 

c. 

demand is unit elastic.

 

d. 

the demand curve crosses the horizontal axis.

Figure 6-6

162. An article in the Wall Street Journal reports that “most cable TV operators are aware that cable is price sensitive, and there comes a point where people won’t pay the price.” Which demand curve in Figure 6-6 best illustrates this situation?

 

a. 

1

 

b. 

2

 

c. 

3

 

d. 

4

163. The formula for the price elasticity of demand

 

a. 

relies on statistical data.

 

b. 

is based fully on knowledge of the slope of the demand curve.

 

c. 

in practice drops the sign and focuses on the magnitude.

 

d. 

is valid only when the price of product increases.

164. The price elasticity of demand for widgets at any particular price is determined by

 

a. 

whether widgets are luxuries or necessities.

 

b. 

how much of their budgets do consumers spend on widgets.

 

c. 

whether there are any good substitutes for widgets.

 

d. 

All of the responses are correct.

165. In an attempt to raise sales, Hannah cut prices in her bookstore by 20 percent. If the dollar value of her sales remained constant, that indicates

 

a. 

old customers bought no more books.

 

b. 

no new customers bought books.

 

c. 

the quantity of books sold increased 20 percent.

 

d. 

the demand curve is vertical.

Figure 6-2

166. In Figure 6-2, the price elasticity of demand (dropping all minus signs) is ____ between P = 4 and P = 6 than between P = 10 and P = 12 because between the lower set of prices the percentage change in price is ____.

 

a. 

smaller; smaller

 

b. 

smaller; greater

 

c. 

greater; smaller

 

d. 

greater; greater

167. If demand is unit elastic, revenue

 

a. 

and price rise and fall together.

 

b. 

rises as price falls.

 

c. 

falls as price rises.

 

d. 

remains constant as price rises or falls.

168. A price cut will decrease the revenue a firm receives if the demand for its product is

 

a. 

elastic.

 

b. 

inelastic.

 

c. 

unit elastic.

 

d. 

straight elastic.

169. The demand for Exxon gasoline is ____ the demand for all gasoline.

 

a. 

exactly as elastic as and has a different slope than

 

b. 

more elastic than

 

c. 

less elastic than

 

d. 

exactly as elastic and has the same slope as

170. A rightward shift in the demand curve for a product will ordinarily result from

 

a. 

a decrease in the advertising budget.

 

b. 

a decrease in the price of a competing product.

 

c. 

an increase in consumer income.

 

d. 

an increase in the price of a complementary good.

171. After a number of acquisitions, Air American controls 75 percent of the U.S. market. It has been charged with “monopolizing” the U.S. air markets by the Justice Department. In its defense, the airline would want to introduce evidence that

 

a. 

cross elasticities for air and rail travel were very high.

 

b. 

income elasticities for air and rail travel were very high.

 

c. 

price elasticity for air, rail, and auto travel were negative.

 

d. 

management always considered the public interest when setting prices.

172. All of the following observations concerning the elasticity formula are true except

 

a. 

the changes with which it deals is measured as a percentage change.

 

b. 

each of the percentage changes is calculated in terms of the average values.

 

c. 

the calculation considers both positive and negative signs.

 

d. 

each percentage change is taken as an “absolute value.”

173. A craze for apples in Riverdale increases the quantity demanded at every price by five bushels. Between any two prices, the new demand curve will be ____ the old demand curve.

 

a. 

more elastic than

 

b. 

less elastic than

 

c. 

equal in elasticity to

 

d. 

More information is needed to predict the relationship.

174. If a demand curve for a good is perfectly inelastic, then the seller could

 

a. 

increase price and not change the number of units purchased.

 

b. 

ignore the effects of costs on its profits.

 

c. 

rely on buyers to look for other products if it increases price.

 

d. 

sell more units by advertising.

175. When the price of penicillin tablets increases by $5 per dozen, the drug company’s revenue increases by $6 million. Its elasticity of demand (in absolute terms) must be

 

a. 

zero.

 

b. 

greater than one.

 

c. 

less than one.

 

d. 

infinitely large.

176. When Scuba, Inc., lowered the price of a tank of compressed air by 20 percent, it sold 10 percent more tankfuls. The price elasticity for compressed air is

 

a. 

2

 

b. 

1/2.

 

c. 

1

 

d. 

20

177. A recent study on enrollment at a liberal arts college concluded that demand elasticity is 0.91. The administration is considering a tuition increase to help balance the budget. The revenue-maximizing decision is to

 

a. 

decrease tuition, which should boost enrollment enough to balance the budget.

 

b. 

decrease tuition, which would bring in more revenue.

 

c. 

leave tuition as is—an increase would not help balance the budget.

 

d. 

increase tuition, which would bring in more revenue.

178. If, as price increases by 10 percent, total revenue decreases by 10 percent, demand is

 

a. 

elastic.

 

b. 

unit elastic.

 

c. 

inelastic.

 

d. 

perfectly inelastic.

179. The definition of cross elasticity of demand for two products X and Y is

 

a. 

percentage change in quantity of X demanded/percentage change in quantity of Y demanded.

 

b. 

percentage change in price of Y/percentage change in quantity of X demanded.

 

c. 

percentage change in price of Y/percentage change in price of X.

 

d. 

percentage change in quantity of X demanded/percentage change in price of Y.

180. Along a straight-line demand curve (dropping all minus signs), the price elasticity of demand

 

a. 

gets larger as quantity demanded gets larger.

 

b. 

gets smaller as quantity demanded gets larger.

 

c. 

always equals one.

 

d. 

is constant (though not necessarily equal to one).

181. If the demand curve is perfectly elastic, and if the price of the good is increased by 10 percent by the seller, then revenue from the sale of the good would

 

a. 

remain constant.

 

b. 

fall to zero.

 

c. 

increase by 10 percent.

 

d. 

decrease by 10 percent.

182. Demand is said to be elastic when percentage changes in quantity demanded are

 

a. 

less than the percentage changes in price.

 

b. 

higher than the percentage changes in price.

 

c. 

equal to the percentage changes in price.

 

d. 

zero when price changes.

183. John’s Bait Shop was surprised to learn that when it raised prices by 10 percent, total revenue was unaffected. This is because the elasticity for bait is

 

a. 

unit elastic.

 

b. 

inelastic.

 

c. 

elastic.

 

d. 

Not enough information is given.

184. A demand curve is described as perfectly elastic if

 

a. 

any quantity can be sold at a given price.

 

b. 

the same quantity is sold regardless of price.

 

c. 

neither price nor quantity demanded ever change.

 

d. 

only price can change.

185. If the price elasticity is 1.50 for the demand of vanilla lattes, then if the seller raises price by 10 percent, then quantity demanded for the product will

 

a. 

rise by 15 percent.

 

b. 

fall by 15 percent.

 

c. 

fall by 1.5 percent.

 

d. 

fall by 67 percent.

186. A 10 percent increase in the cost of restaurant meals, which are a luxury, will most likely

 

a. 

increase the purchase of meals by 10 percent.

 

b. 

increase the purchase of meals by less than 10 percent.

 

c. 

decrease the purchase of meals by more than 10 percent.

 

d. 

decrease the purchase of meals by less than 10 percent.

Figure 6-1

187. In Figure 6-1,

 

a. 

D1 is more elastic than D2 below P2 and less elastic above P2.

 

b. 

D1 is less elastic than D2 at all prices.

 

c. 

D2 is less elastic than D1 at all prices.

 

d. 

D2 is more elastic than D2 above P2 but less elastic below P2.

188. If goods X and Y are complements, the

 

a. 

quantities demanded of X and Y tend to move in opposite directions.

 

b. 

quantities demanded of X and Y tend to move in the same direction.

 

c. 

prices of X and Y tend to move in the same direction.

 

d. 

supply curves for X and Y tend to move in the same direction.

189. Regarding demand elasticity, which of the following statements is correct?

 

a. 

If demand for seller’s product is elastic, a price increase will decrease total revenue.

 

b. 

If demand for seller’s product is elastic, a price increase will increase total revenue.

 

c. 

If demand is exactly unit elastic, an increase in price will raise total revenue.

 

d. 

If demand is exactly unit elastic, an increase in price will raise total revenue.

190. Regarding the price elasticities of demand, which of the following statements is true?

 

a. 

Price elasticities vary considerably from product to product.

 

b. 

Luxurious goods are generally less price elastic.

 

c. 

Necessities are generally more price elastic.

 

d. 

All of these statements are true.

191. When the price of a sweet roll is $2, the bakery sells 300 rolls per week. If it raises the price to $3, then it sells 150 rolls per week. Based on this, the price elasticity of a sweet roll between these prices is

 

a. 

0.40.

 

b. 

1

 

c. 

1.67.

 

d. 

0.67.

192. Along the inelastic portion of a demand curve, the

 

a. 

change in price will always be less than the change in quantity demanded.

 

b. 

percentage change in price will be less than the percentage change in quantity demanded.

 

c. 

change in price will always be more than the change in quantity demanded.

 

d. 

percentage change in price will be more than the percentage change in quantity demanded.

193. If the price elasticity of supply of doodads equals 0.50 and the price rises by 3 percent, then the quantity supplied of doodads will rise by ____.

 

a. 

0.50 percent.

 

b. 

1.50 percent.

 

c. 

6.00 percent.

 

d. 

15 percent.

194. If the price elasticity of demand for radios is 2.5 (dropping the minus sign), then a 50 percent reduction in the price of radios will lead to

 

a. 

the sale of 200 additional radios.

 

b. 

the sale of 125 percent more radios than before.

 

c. 

the sale of 150 percent more radios than before.

 

d. 

the sale of 25 percent more radios than before.

Figure 6-6

195. The purchase of premium cable channels is an “all-or-nothing” choice. Which graph in Figure 6-6 best illustrates the cable market demand curve?

 

a. 

1

 

b. 

2

 

c. 

3

 

d. 

4

Figure 6-3

196. In Figure 6-3(b), as price falls from $15 to $6, total expenditure

 

a. 

falls.

 

b. 

increases.

 

c. 

remains constant.

 

d. 

first falls and then increases.

197. After a $5 million ad campaign, Coca-Cola measured its effectiveness by calculating the cross elasticity of demand between Coke and Pepsi. A successful campaign would be indicated if the cross elasticity went from

 

a. 

0.9 to 0.5.

 

b. 

0.9 to 1.5.

 

c. 

−0.5 to −0.2.

 

d. 

−0.9 to −1.5.

198. Total expenditure by a buyer is equal to the

 

a. 

slope at any point along the demand curve.

 

b. 

price times quantity demanded at any point along the demand curve.

 

c. 

elasticity times price at any point along the demand curve.

 

d. 

elasticity times quantity demanded at any point along the demand curve.

Figure 6-5

199. If the demand curve in Figure 6-5 is unit elastic, then total expenditure at A is ____ total expenditure at B.

 

a. 

greater than

 

b. 

less than

 

c. 

equal to

 

d. 

less elastic than

200. Which of the following goods will have the most inelastic demand at any time?

 

a. 

Jewelry

 

b. 

Big Macs

 

c. 

Electricity

 

d. 

Pork chops

201. The emigration of some of Whoville’s workers reduces the quantity of thingamabobs supplied at every price by 50. The new supply curve will ____ the old supply curve.

 

a. 

be steeper and less elastic at every price than

 

b. 

have the same slope and the same elasticity at every price as

 

c. 

have the same slope and be more elastic at every price than

 

d. 

More information is needed to predict the relationship between the elasticities of the two supply curves.

202. If the demand for gasoline becomes more elastic over time,

 

a. 

the demand curve will shift out.

 

b. 

the demand curve will become flatter.

 

c. 

other things being equal, the equilibrium price of gasoline must fall.

 

d. 

other things being equal, the equilibrium quantity of gasoline must fall.

203. The demand for a new effective drug for the cure of AIDS would most likely be

 

a. 

elastic.

 

b. 

unit elastic.

 

c. 

perfectly elastic.

 

d. 

highly inelastic.

204. A study of New York City (NYC) tax rates concluded that taxes on the nonmanufacturing sector should be higher since that sector has fewer alternatives. Manufacturers are more mobile and may move to avoid higher taxes. This means that

 

a. 

nonmanufacturing firms have a more elastic demand for the NYC locations.

 

b. 

manufacturing firms have an inelastic demand for the NYC locations.

 

c. 

nonmanufacturing firms have relatively inelastic demand for the NYC locations.

 

d. 

nonmanufacturing demand for the NYC locations is perfectly elastic.

205. The price of coffee rose 50 percent and coffee sales fell 25 percent. Doughnut sales also fell 25 percent. From this information, we can conclude that

 

a. 

demand for coffee is inelastic.

 

b. 

coffee and doughnuts are complements.

 

c. 

the cross elasticity of demand is minus 0.5 percent.

 

d. 

All of the responses are correct.

206. Price elasticity of demand is defined as

 

a. 

slope divided by price.

 

b. 

percentage change in price divided by percentage change in quantity demanded.

 

c. 

percentage change in quantity demanded divided by percentage change in price.

 

d. 

the inverse of the price elasticity of supply.

207. If the price of potatoes is reduced, consumers likely buy

 

a. 

significantly more potatoes.

 

b. 

significantly fewer potatoes.

 

c. 

roughly the same quantity of potatoes.

 

d. 

an unknown quantity of potatoes; in this situation, consumers’ actions cannot be predicted.

Figure 6-3

208. Using Figure 6-3(b), as price falls from $15 to $6, the elasticity of demand is (dropping all minus signs)

 

a. 

0.857.

 

b. 

1.167.

 

c. 

1.0.

 

d. 

0.67.

209. The local symphony recently raised its price for tickets to their summer concerts in the park. At the end of the summer season, the symphony was surprised to see that total revenue had actually decreased. The reason was that the elasticity of demand for tickets was

 

a. 

unit elastic.

 

b. 

inelastic.

 

c. 

elastic.

 

d. 

Not enough information is given.

Figure 6-7

210. In Figure 6-7, which total expenditure curve belongs to a demand curve that is unit elastic throughout?

 

a. 

1

 

b. 

2

 

c. 

3

 

d. 

4

211. Big Al’s Burger Emporium lowered the price of its burgers from $8 to $6. The firm saw sales of burger increase from 1,200 per week to 2,000 per week. This implies that the price elasticity (dropping any negative signs) is

 

a. 

0.29

 

b. 

0.57

 

c. 

1.75

 

d. 

0.50

212. If a 10 percent rise in price leads to a reduction in quantity demanded of more than 10 percent,

 

a. 

demand is elastic.

 

b. 

demand is inelastic.

 

c. 

elasticity of demand is unitary.

 

d. 

None of the above is correct.

213. The measure used to determine whether two products are substitutes or complements is called

 

a. 

price elasticity of demand.

 

b. 

income elasticity of demand.

 

c. 

cross elasticity of demand.

 

d. 

inverse elasticity of demand.

214. If two goods are complements, their cross elasticity of demand will normally be

 

a. 

zero.

 

b. 

a negative number.

 

c. 

a positive number.

 

d. 

infinity.

Figure 6-3

215. In Figure 6-3(a), at any price above $6, quantity demanded

 

a. 

falls to zero.

 

b. 

becomes infinitely large.

 

c. 

equals price.

 

d. 

equals the elasticity of demand.

Figure 6-2

216. Other things equal, it can be concluded that in Figure 6-1, that

 

a. 

D1 is the more elastic demand curve than D2, but only below P2.

 

b. 

D1 is the more elastic demand curve than D2.

 

c. 

D1 is the less elastic demand curve than D2.

 

d. 

D1 is the more elastic demand curve than D2, but only above P2.

217. Using Figure 6-2, calculate the price elasticity of demand (dropping all minus signs) between P = 10 and P = 12.

 

a. 

2.20

 

b. 

0.45

 

c. 

0.80

 

d. 

1.25

218. The formula for price elasticity of demand that is used in practice

 

a. 

usually drops all minus signs.

 

b. 

usually takes on different values at different points on the demand curve.

 

c. 

may calculate the percentage change in price between P1 and P2 as “(P2 − P1) as a percentage of (P1 + P2)/2.”

 

d. 

All of the responses are correct.

219. Tele-Com, Inc., the nation’s largest cable TV company, tested the effect of a price reduction for the Disney Channel. It lowered prices from $10.75 to $7.95 and found that the number of customers more than doubled. This means the

 

a. 

demand curve for the Disney Channel shifted to the right.

 

b. 

supply curve of the Disney Channel shifted to the left.

 

c. 

demand for the Disney Channel is elastic in this price range.

 

d. 

demand for the Disney Channel is inelastic in this price range.

220. The demand for a product is inelastic whenever

 

a. 

the percentage change in quantity demanded is less than the percentage change in price.

 

b. 

the percentage change in quantity demanded is higher than the percentage changes in price.

 

c. 

the percentage change in quantity demanded is equal to the percentage changes in price.

 

d. 

the quantity demanded changes by zero when price changes.

221. When OPEC raises the price of petroleum, American expenditures on oil imports increase, suggesting that

 

a. 

the United States’ elasticity of demand for imported oil is greater than one.

 

b. 

the United States’ elasticity of demand for imported oil is less than one.

 

c. 

imported oil and domestically produced oil are complementary goods.

 

d. 

the short-run elasticity of demand for oil is greater than the long-run elasticity.

222. Which of the following will lead to a movement along the same demand curve?

 

a. 

Changes in income

 

b. 

Changes in the price of substitute goods

 

c. 

Changes in the price of the product

 

d. 

Changes in the preference of the consumer

223. Suppose that a 15 percent decrease in price leads to an increase in the quantity demanded of 10 percent,

 

a. 

demand is elastic.

 

b. 

demand is inelastic.

 

c. 

elasticity of demand is unitary.

 

d. 

None of the above is correct.

224. Sun City’s public bus line has been operating at a deficit. The city decides to raise the fare from 50 cents to 75 cents, anticipating enough additional revenue to cover the deficit. What assumption is the city making about price elasticity?

225. The cross elasticity between two goods has been measured at −1.2. How are the goods related? Explain. Give an example of goods for which this might be a reasonable measure of cross elasticity.

226. The Sandy Deli operates near a college campus. It has been selling 325 sandwiches a day at $1.75 each and is considering a price cut. It estimates 450 sandwiches would sell per day at $1.50 each. Calculate the marginal revenue of such a price cut and the elasticity between the two points.

227. Would a profit-maximizing firm sell at a price where demand is inelastic? Explain.

228. Along a straight-line demand curve, why does the price elasticity of demand grow steadily smaller as we move from left to right?

229. Suppose that elasticity has been reliably measured as 1.55 and the unit price decreases from $20 to $17.50. How much will quantity demanded increase?

230. What does cross elasticity of demand between goods reveal about the nature of relationship between them?

231. If Polaroid wanted damages against Kodak for infringing on its instant development film process, and the courts found a high positive cross elasticity between purchases of Polaroid instant film and 35 mm regular film, would that have strengthened or weakened Polaroid’s claim against Kodak?

232. Explain what happens to the magnitude of price elasticity of demand as price increases along a straight-line demand curve.

233. Why is it customary to report price elasticity of demand in absolute value terms while cross elasticities and income elasticities are reported with their sign attached?

234. What is an optimal decision?

235. If the income of buyers increases and a company maintains the same price, what is the most likely impact on quantity sold? Explain. Draw a graphical display of the result.

236. The following table contains information regarding price and output for a firm. For each point except the first, calculate the elasticity between it and the point above.

Price

Quantity

Elasticity

$7

10

_____

6

20

_____

5

30

_____

4

40

_____

3

50

_____

2

60

_____

1

70

_____

237. What is the shape of a perfectly elastic demand curve? Explain its significance for a seller.

238. How might a court use cross elasticity in an antitrust case?

239. The sales manager of a retail outlet suggests that the best way to increase customers is to have a sale. If a 10 percent price cut doesn’t bring in enough customers, then he’ll cut prices 20 percent. Increased cash flow should take care of profits. Do you agree? Explain.

240. Why are time series data unlikely to give an accurate estimate of demand?

241. A unit-elastic demand curve never touches or crosses either of the axes. Why?

242. How might a market research analyst use measures of elasticity—price, cross, and income—in her work? Explain.

243. Arrange the following goods from least to most elastic, explaining your ordering: gasoline, Exxon gas, Exxon gas at a particular gas station.

244. What are the main determinants of demand elasticity? Explain their importance.

245. How would an increase in cigarette taxes succeed according to the following criteria: collecting a large amount of tax revenue; distorting demand as little as possible; discouraging consumption of harmful commodities?

246. For each pair of goods, explain which is more elastic: toothpicks vs. cars; electricity vs. yachts; IBM computers vs. Apple computers.

247. Using the general concept of elasticity, would you expect the elasticity of demand for advertising to be positive or negative? Explain.

248. The current price of concert t-shirts is $20 each, and the company has been selling 400 per week. If price elasticity is 2.5 and the price changes to $21, how many t-shirts will be sold per week?

249. Why do economists measure responsiveness of demand to price in percentage changes rather than in absolute changes?

250. In a past fare war, U.S. Air reduced the price of its Charlotte, North Carolina, to New York City round-trip fare from $198 to $138 to match American Airlines. U.S. Air did so reluctantly, saying it would cost the company millions of dollars in revenue. American, on the other hand, believed the fare cut would increase its revenue. What different assumptions about the underlying price elasticity of demand did each airline believe true?

251. Define the following terms and explain their importance to the study of economics.

a. price elasticity

b. complements

c. substitutes

d. cross elasticity

e. supply elasticity

252. In the DuPont cellophane case, rivals accused DuPont of monopolizing cellophane. DuPont claimed that the relevant market was flexible wrapping material, such as wax paper and aluminum foil, rather than just cellophane. DuPont won the case. What type of evidence constituted DuPont’s defense?

253. How can one tell from cross elasticity what kind of relationship exists between any two goods?

254. Specifically, what might cause the quantity demanded of a particular good to double at a particular price?

Document Information

Document Type:
DOCX
Chapter Number:
6
Created Date:
Aug 21, 2025
Chapter Name:
Chapter 6 Demand And Elasticity
Author:
William J. Baumol

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