14) Pepsi and pizza are normal goods. When the price of pizza falls, the substitution
effect by itself will cause a
a.shift to a lower indifference curve so that the consumer buys less Pepsi.
b.shift to a higher indifference curve so that the consumer buys more Pepsi.
c.movement along the indifference curve so that the consumer buys more Pepsi.
d.movement along the indifference curve so that the consumer buys less Pepsi.
15) If the distribution of water is a natural monopoly, then
(i)imultiple firms would likely each have to pay large fixed costs to develop their own
network of pipes.
(ii)allowing for competition among different firms in the water-distribution industry is
efficient.
(iii)a single firm can serve the market at the lowest possible average total cost.
a.(i) and (ii) only
b.(ii) and (iii) only
c.(i) and (iii) only
d.(iii) only
16) Katie is planning to sell her house, and she is considering making two upgrades to
the house before listing it for sale. Replacing the carpeting will cost her $2,500 and
replacing the roof will cost her $9,000. Katie expects the new carpeting to increase the
value of her house by $3,000 and the new roof to increase the value of her house by
$7,000.
a.She should make both improvements to her house.
b.She should replace the carpeting but not replace the roof.
c.She should replace the roof but not replace the carpeting.
d.She should not make either improvement to her house.
17) Suppose that a firm’s longrun average total costs of producing small commuter jet
airplanes increases as it produces between 2,000 and 4,000 airplanes. For this range of
output, the firm is experiencing
a.economies of scale.
b.constant returns to scale.
c.diseconomies of scale.
d.specialization.