There are many industries in the United States where only a few firms compete. These industries
a. have low Herfindahl-Hirschman Indexes
b. are considered to be oligopolies
c. are considered to be monopolistically competitive
d. have four-firm concentration ratios that approach zero
e. all practice price leadership
B
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Suppose the economy is producing above potential GDP and the Federal Reserve implements the appropriate change in monetary policy, but not until after the economy has started to slow down on its own. In this situation there is a real danger that
A) the Fed's expansionary policy will result in too small of an increase in GDP. B) the Fed's expansionary policy will result in too large of an increase in GDP. C) the Fed's contractionary policy will result in too large of a decrease in GDP. D) the Fed's contractionary policy will result in too small of a decrease in GDP.
What percentage of Aggregate Expenditure is consumption in recent decades?
a. 22% b. 15% c. 32% d. 70%