Four-Firm Concentration RatiosThe most oligopolistic industry of those presented in the above table is likely to be industry

If, when a firm doubles all its inputs, its average cost of production increases, then production displays

A) economies of scale. B) diminishing returns. C) diseconomies of scale. D) declining fixed costs.

Samantha is given a flu shot by her doctor. This reduces the probability that she will get the flu and it also reduces the probability that others will get the flu, too. The latter is an example of a

A. negative externality. B. positive externality. C. substitute good. D. complementary good.