Winnie's Car Wash is a perfectly competitive firm. The table above shows Winnie's total product schedule. If the price of a car wash is $4, what is the value of marginal product of the 4th worker?

If a country is producing efficiently and is on the production possibilities frontier, the only way to produce more of one good is to produce less of the other

Indicate whether the statement is true or false

In conditions of full employment

A) no one in or out of the labor force is unemployed. B) the only unemployment results from a normal frictions and structural mismatches in the labor market. C) the only unemployment results from cyclical swings in economic activity. D) no one in the labor force is unemployed.