The marginal productivity principle has relevance only in a capitalist economy, and not in a socialist system

The initial impact of the Fed's open market sale of government securities to banks is

A) an increase in the quantity of money by some multiple of the dollar volume of the sale. B) an increase in bank deposits at the Fed. C) a decrease in the quantity of money by some multiple of the dollar volume of the sale. D) a decrease of the banking system's reserve deposits at the Fed.

Which of the following is a test of the statistical significance of a particular regression coefficient?

A) t-test B) R2 C) F-test D) Durbin-Watson test