Suppose the United States decides to impose a $1,000 tax on every Japanese minivan sold in the United States. This is an example of:

The reliability of a study using multiple regression analysis depends on all of the following with the exception of

A) omitted variable bias. B) errors-in-variables. C) presence of homoskedasticity in the error term. D) external validity.

According to the classical model, total employment will increase when

a. the birth rate increases b. the government creates more jobs c. the labor force increases d. individuals receive more education e. there is a recession