Bob and Mary each have a Ph.D. in economics. Bob has a job in private industry at which he earns 90,000 a year. Mary earns half that much as a college professor. Which of the following could not explain Mary's career choice?
a. She experiences diminishing marginal utility.
b. She enjoys the flexibility of her schedule.
c. She enjoys teaching.
d. She enjoys the informal atmosphere of a college.
e. She likes having her summers free to do research.
Question 2
Which of the following would not account for the observed wage differential between African Americans and whites in the United States?
a. differences in the quantity of on-the-job training
b. differences in the quality of education
c. discrimination by employers
d. differences in job experience
e. differences in access to public assistance programs
