30. Suppose that roofers are not unionized. If roofers unionize, then the supply of labor in other sectors of the economy
will
decrease, raising wages in industries that are not unionized.
decrease, reducing wages in industries that are not unionized.
increase, raising wages in industries that are not unionized.
increase, reducing wages in industries that are not unionized.
31. Suppose that neither food-service workers nor retail salespeople are unionized. If food-service workers unionize, then
the supply of retail salespeople will
rise, as will the wages of retail salespeople.
rise, and the wages of retail salespeople will fall.
fall, as will the wages of retail salespeople.
fall, and the wages of retail salespeople will rise.
32. Suppose that bartenders and waiters have no unions. Now suppose that bartenders form a union. What does this do the
labor supply and wages of waiters?
Both labor supply and wages increase.
Labor supply increases, and wages decrease.
Labor supply decreases, and wages increase.
Both labor supply and wages decrease.