6) The basic difference between the short run and the long run is that:
A.all costs are fixed in the short run, but all costs are variable in the long run.
B.the law of diminishing returns applies in the long run but not in the short run.
C.at least one resource is fixed in the short run, while all resources are variable in the
long run.
D.economies of scale may be present in the short run but not in the long run.
7) Suppose the courts declare that XYZ Corporation violated the antitrust laws and as a
result the ABC Corporation lost $100 million of profits. XYZ Corporation will have to
pay ABC Corporation a monetary award of:
A.$100 million.
B.$33.3 million.
C.$150 million.
D.$300 million.
8) A natural monopoly exists when:
A.unit costs are minimized by having one firm produce an industry’s entire output.
B.several formerly competing producers merge to become the only firm in an industry.
C.short-run average total cost curves are tangent to long-run average total cost curves.
D.minimum efficient scale is attained at a small level of output.
9) The wages of plumbers are likely to increase when:
A.Licensing standards for the occupation are increased
B.There is an increase in the cost of plumbing supplies
C.The length of the training period for plumbers is decreased
D.More do-it-yourself home improvement centers open across the nation
10) Answer the question on the basis of the following total utility data for products L
and M. Assume that the prices of L and M are $3 and $4 respectively and that the
consumer’s income is $18.