Which of the following is most likely to represent causality rather than association?
A. In years that fashion dictates wider lapels on men's jackets, the stock market grows by at least 5 percent.
B. Interest rates are higher in years ending with a 1 or a 6.
C. Unemployment falls when the AFC champion wins the Super Bowl.
D. Quantity demanded goes up when price falls because lower prices increase consumer purchasing power, ceteris paribus.
Answer: D
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When the marginal product is increasing as the quantity increases, then as the quantity increases, the
A) average product is decreasing. B) marginal cost is decreasing. C) total cost is decreasing. D) total product is decreasing. E) fixed cost is increasing.
Which of the following was a source of the U.S. federal government's financial revenue for World War II (1941–45)?
(a) Tariffs (b) Bond sales to other governments (c) Bond sales to the Federal Reserve System (d) Bond sales to the U.S. Congress