Econ 001 - Principles of Microeconomics » Summer 2019 » Quiz 4

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Question #1
The size of the change in the quantity demanded of a good or service due to change in its price is measured by the elasticity of demand. When the percentage change in the quantity demanded for a good or service is more than the percentage change in price, the demand for that good or service is ________ and the price elasticity coefficient is ________.
A.   inelastic, less than 1
B.   elastic, greater than 1
C.   unitary, equal to 1
Question #2
Elastic supply occurs if the change in quantity supplied is ________ to a change in price.
A.   the same
B.   relatively unresponsive
C.   relatively responsive
Question #3
A perfectly elastic supply curve is
A.   upward sloping to the right.
B.   vertical.
C.   horizontal.
Question #4
Elasticity is relevant when trying to understand
A.   how a change in price affects quantity supplied, how a change in price affects quantity demanded, and how raising a tax on a good affects the revenue from the tax.
B.   how a change in quantity demanded affects price and how a change in quantity supplied affects price.
C.   the burden of taxes on consumers.
Question #5
Elasticity refers to
A.   how responsive one variable is to changes in another.
B.   how long it takes a market to reach equilibrium.
C.   how frequently a demand curve or supply curve changes slope.
Question #6
Which of the following concepts can be used to understand the effects of price changes on quantity demanded and quantity supplied, as well as the effect of raising taxes on revenue from the tax?
A.   scarcity.
B.   supply and demand model
C.   elasticity
Question #7
Which of these questions is the best example of elasticity?
A.   How much will a change in price or quantity impact consumer and producer behavior?
B.   How will a change in consumer behavior affect the overall consumer experience?
C.   What is the least amount of goods a supplier can produce without upsetting the customers?
Question #8
Which of the following factors does NOT influence the price elasticity of demand of a product?
A.   short run versus long run
B.   slope of the supply curve
C.   share of the consumer budget
Question #9
Determining the price elasticity of demand involves all of the following factors, but NOT
A.   slope of the supply curve.
B.   luxuries versus necessities.
C.   availability of substitutes.
Question #10
Which of the following questions would be asked by an economist studying elasticity?
A.   How responsive are consumers and producers to changes in price?
B.   What quantity should producers sell to maximize profit?
C.   How will consumer behavior change with a technological innovation?
Question #11
If wage increases by 10%, a(n) ________ worker is likely to supply 7% more labor because elasticity of labor supply is assumed to be ________.
A.   adult; inelastic.
B.   teenager; elastic.
C.   adult; elastic.
Question #12
Suppose the price of apples increase by 20%, resulting in consumers to purchase 15% more pears. Given this information, it appears that
A.   price elasticity of demand of apples is 1.33.
B.   price elasticity of demand of pears is 0.75.
C.   cross-price elasticity of pears is 0.75.
Question #13
When a 5% increase in income causes a 3% drop in quantity demanded of a good
A.   the income elasticity is 1.67 and the good is a normal good.
B.   the income elasticity is .6 and the good is an inferior good.
C.   the cross-price elasticity is .6 and the good is an inferior good.
Question #14
A 10% decrease in the price of potato chips leads to a 30% increase in the quantity of soda demanded. It appears that
A.   cross-price elasticity of demand for soda is -3.
B.   price elasticity of demand for soda is 3.
C.   price elasticity of demand for potato chips is 3.
Question #15
Negative cross price elasticity of demand between two goods indicates that the two goods are
A.   complements.
B.   substitutes.
C.   inferior goods.
Question #16
If consumers find cola and iced tea good substitutes, then it is likely that
A.   the goods’ cross price elasticities are greater than zero.
B.   the goods’ income elasticities are less than zero.
C.   the goods’ price elasticities of demand are less than one.
Question #17
You are the manager of the public transit system. You are informed that the system faces a deficit, but you cannot cut service, which means you cannot cut costs. Your only hope is to increase revenue by increasing fares. You are advised that the estimated price elasticity of demand for the first few months after a price change is about −0.3. Select the statement that best describes the results of raising the fare in the short run.
A.   Total revenue falls, since demand changes and becomes price inelastic.
B.   Total revenue rises immediately after the fare increase, since demand over the immediate period is price inelastic.
C.   Total revenue will rise incrementally as the demand fluctuates and price moves back and forth between being elastic and inelastic.
Question #18
You are the manager of the public transit system. You are informed that the system faces a deficit, but you cannot cut service, which means you cannot cut costs. Your only hope is to increase revenue by increasing fares. You are advised that the estimated price elasticity of demand, several years after the price change, will be about −1.5. Select the statement that best describes the results of raising the fare in the long run.
A.   Total revenue rises immediately, since demand will remain price inelastic.
B.   Total revenue will fluctuate as the demand fluctuates.
C.   Total revenue falls, since demand changes and becomes price elastic.
Question #19
Suppose there is a major technological advance in the production of a good that causes production costs to fall. If demand for the product is relatively inelastic, what will happen in the market?
A.   Price will relatively decrease greater than the increase in quantity.
B.   Price and quantity will change by the same amount.
C.   Price will relatively decrease less than the increase in quantity.

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