The fraction of an industry's sales that are accounted for by the four largest firms is called
A) the four-firm competition ratio.
B) the four-firm concentration ratio.
C) the four-firm industry ratio.
D) the four-firm oligopoly ratio.
Answer: B) the four-firm concentration ratio.
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If pizza is measured on the horizontal axis and pretzels are measured on the vertical axis, the slope of the production possibility frontier at a given combination reflects
A) the total cost of producing that combination. B) the total cost of producing that quantity of pizza in terms of pretzels. C) the cost of making the last pizza in terms of pretzels. D) the cost of making the last pretzel in terms of pizza.
Monica consumes only goods A and B
Suppose that her marginal utility from consuming good A is equal to 1/Qa, and her marginal utility from consuming good B is 1/Qb. If the price of A is $0.50, the price of B is $4.00, and the Monica's income is $120.00, how much of good A will she purchase? A) 0 B) 12 C) 24 D) 48 E) 120
Which of the following causes an increase in demand for a normal good?
A) increase in the price of a substitute B) increase in the price of a complement C) decrease in price D) decrease in income
When a market is characterized by an externality, the government
a. can correct the market failure only in the case of positive externalities. b. can correct the market failure only in the case of negative externalities. c. can correct the market failure in the case of both positive and negative externalities by inducing market participants to internalize the externality. d. cannot correct for externalities due to the existence of patents.