Under a fixed exchange rate system, to prevent the depreciation of the dollar as a result of a balance of payments deficit, the Fed will increase the demand for dollars by supplying a foreign currency from its reserve assets

In deciding whether to study for an economics quiz or go to a movie, one is confronted by the idea(s) of:

A. scarcity and opportunity costs. B. money and real capital. C. complementary economic goals. D. full production.

Which of the following 95% confidence intervals for the estimate of the population treatment effect is the most convincing evidence that a policy intervention was indeed effective?

A. (-0.5, 0.9). B. (-0.1, 0.5). C. (0.5, 0.75).? D. (-0.2, 0.3).