Increases in productivity are not responsible for increased standards of living in the United States

An argument against the use of tariffs to keep out the production of "cheap" foreign labor is that:

A) wage rates and labor productivity are directly related. B) product prices and labor costs are unrelated. C) there is no significant relationship between labor productivity and wage levels. D) they don't work.

An increase in government expenditures ________ "national saving" and thus tends to ________ private investment

A) increases, increase B) increases, decrease C) decreases, increase D) decreases, decrease