8) Suppose that the labor market for life guards is initially in equilibrium. Then
swimming pool owners adopt a new labor-saving technology that uses computers to
monitor the locations of swimmers in the pool. What happens to the equilibrium wage
and quantity of life guards?
a.Both the equilibrium wage and quantity increase.
b.Both the equilibrium wage and quantity decrease.
c.The equilibrium wage increases, and the equilibrium quantity decreases.
d.The equilibrium wage decreases, and the equilibrium quantity increases.
9) Which of the following statements is correct? Monopolies are socially inefficient
because they
(i)charge a price above marginal cost.
(ii)produce too little output.
(iii)earn profits at the expense of consumers.
(iv)maximize the market’s total surplus.
a.(iii) only
b.(iii) and (iv) only
c.(i) and (ii) only
d.(i), (ii), (iii), and (iv)
10) Acme Computer Co. sells computers to retail stores for $400. If Acme requires the
retailers to charge customers $500 for the computers, then it is engaging in
a.resale price maintenance.
b.predatory pricing.
c.tying.
d.monopolistic competition.
11) Screening occurs when
a.an informed party acts to reveal his private information.
b.an informed party acts to conceal his private information.
c.an uninformed party acts to induce the informed party to reveal private information.
d.an uninformed party acts on its limited information.