Which of the following explain how wage differentials improve the efficiency of resource allocation? check all that apply. wage differentials arising from racial discrimination allocate labor efficiently across jobs. o wage differentials incentivize individuals to make investments in their human capital. wage differentials compensate people for unfavorable work conditions. wage differentials arising from labor unions allocate labor efficiently within an industry. in the following table, indicate whether each nonpecuniary job characteristic wil lead to a higher wage or a lower wage, holding all other job characteristics constant. nonpecuniary job characteristic the job requires substantial amounts of out-of-town travel. the job involves split shifts (work three hours, off two hours, work three additional hours, and so on) the employer provides free laundry service to employees. higher wage lower wage 5. critical analysis q11 consider two occupations (a and b) in which people have the same skills and abilities. when employed, workers in the two occupations work the same number of hours per day. in occupation a, employment is stable throughout the year, while employment in occupation b is characterized by seasonal layoffs the annual wage will be lower in occupation