_____________ is (are) the key factor in explaining the decline in death rates in the U.S. in the late 19th and early 20th century
a. Improved sanitation
b. Improved medical treatments
c. Urbanization
d. A more varied and nutritious diet
a. Improved sanitation
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For a natural monopoly, if price is equal to marginal social cost, then
A) the deadweight loss is as large as possible. B) the firm makes zero economic profit. C) there is no deadweight loss. D) there is no deadweight loss and the firm makes a positive economic profit.
Industry X has four firms. The largest firm in Industry X has more than 90 percent of the market share. Industry Y also has four firms, but each of those four firms in Industry Y has 25 percent of the market share
The Herfindahl-Hirschman index will be A) the same for both industries, but the four-firm concentration will be larger for Industry Y than Industry X. B) the same for both industries, but the four-firm concentration will be larger for Industry X than Industry Y. C) larger for Industry Y than Industry X, but the four-firm concentration will be the same. D) larger for Industry X than Industry Y, but the four-firm concentration will be the same.
Coal mining is a dangerous and dirty job. Suppose someone developed new machinery that made coal mining safer and cleaner; at the same time, suppose it made coal miners more productive. We would expect that the wages of coal miners would
a. rise. b. fall. c. stay exactly the same. d. rise, fall, or stay the same.
Suppose that you decide to purchase either stocks or bonds of a particular corporation and you also prefer to receive some returns from the securities every year. Which should you buy - stocks or bonds? Why?
What will be an ideal response?