9) In the short run equilibrium, a monopolist’s profits:
A.May be positive, negative, or zero
B.Are positive because of the monopolist’s market power
C.Are positive if the product’s elasticity of demand is less than 1
D.Are positive if the product’s elasticity of demand is greater than 1
10) The U.S. income-maintenance program consists of two kinds of programs. They
are:
A.the minimum wage law and Social Security.
B.antidiscrimination law and education and training programs.
C.social insurance and public assistance, or “welfare.”
D.progressive income taxes and transfer payments.
11)
Refer to the given diagram in which line AB is the U.S. production possibilities curve
and AC is its trading possibilities curve. The international exchange ratio between beef
and cheese (terms of trade):
A.is the absolute value of the slope of line AB.
B.is the absolute value of the slope of line AC.
C.could lie anywhere between the absolute value of the slopes of lines AB and AC.
D.cannot be determined on the basis of this information.
12) Fixed costs are those costs which are:
A.Zero if the firm produces no output in the short run
B.Unchanging through time
C.Independent of the rate of output
D.Implicit to a competitive firm
13) When people base their estimates of the likelihood of an event on how often they’ve
heard of such an event, they illustrate the: