A theory asserts that manufacturers are less willing to sell units of output as the price of a good decreases, ceteris paribus. However, as the price of computers fell throughout the 1990s, more computers were sold. Which of the following best explains the apparent conflict between theory and data?
a. The theory must be invalid
b. The theory rests on assumptions that are too simplistic.
c. It is likely that variables other than the price and quantity of computers sold were changing.
d. All variables other than the price and quantity of computers sold were unchanged.
c
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What is one difference between stocks and bonds?
A) Bonds are purchased at a bank, while stocks are purchased through the federal government. B) Bonds earn a higher rate of return than stocks. C) Stocks earn a higher rate of return than bonds. D) Stocks represent partial ownership in a firm, while bonds do not.
Ideal randomized controlled experiments in economics are
A) often performed in practice. B) often used by the Federal Reserve to study the effects of monetary policy. C) useful because they give a definition of a causal effect. D) sometimes used by universities to determine who graduates in four years rather than five.
If the exchange rate between the U.S. dollar and the Euro were 1.50 ($1.50 = one Euro), what would be the price in dollars of a German automobile that cost 40,000 Euros?
a. $10,000 b. $20,000 c. $60,000 d. $200,000
Which of the following statements best describes the study of economics?
A. Economics studies how people maximize returns in the stock market. B. Economics studies how the Federal Reserve handles fluctuation in business cycles. C. Economics studies how governments determine appropriate tax rates. D. Economics studies how individuals and groups manage scarce resources.