Question 27 2 pts Restricting the supply of labor in order to increase wages: is a tactic more likely to be used by the UAW than the AMA. is a tactic used by service sector unions. is a tactic used solely by professional groups such as lawyers. O has less effect on the wage than direct negotiation does. is a tactic more likely to be used by the American Medical Association (AMA) than the United Auto Workers (UAW).Question 28 2 pts The average work week in the United States has declined to fewer than 40 hours even though wage rates have been increasing. The best explanation for this phenomenon is that: the income effect of rising wages outweighed the substitution effect. the labor supply curve is linear and upward slopping. the labor demand curve shifted to the right. O the labor supply curve shifted to the right. the substitution effect of rising wages outweighed the income effect