As the number of stocks in a person's portfolio increases,
a. the risk of the portfolio increases, as indicated by the increasing value of the standard deviation of the portfolio.
b. the risk of the portfolio increases, as indicated by the decreasing value of the standard deviation of the portfolio.
c. the risk of the portfolio decreases, as indicated by the increasing value of the standard deviation of the portfolio.
d. the risk of the portfolio decreases, as indicated by the decreasing value of the standard deviation of the portfolio.
d
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The law of comparative advantage implies that a doctor who is also a talented auto mechanic should
A. get a part-time job at a gas station. B. do his or her own auto repairs and those of his or her neighbors. C. hire a professional mechanic to repair his or her car. D. only repair the cars of other doctors.
Suppose the economy is at a short-run equilibrium GDP that lies below potential GDP. Which of the following will occur because of the automatic mechanism adjusting the economy back to potential GDP?
A) Unemployment will rise. B) Prices will increase. C) Output will decrease. D) Short-run aggregate supply will shift to the right.
Refer to Figure 28-1. Suppose that the economy is currently at point A. If the Federal Reserve engaged in expansionary monetary policy, where would the economy end up in the short run?
A) It would remain at point A. B) point B C) point C D) point D E) point E
Which of the following statements about profit maximizing firms in a competitive market is FALSE?
A) Firms earn no economic profit in the long run. B) Marginal revenue does not have to equal marginal cost. C) p - MC = 0. D) Price equals marginal revenue.