Question: Referring to the contingency table in Problem 4.8, if a respondent is selected at random, what is the probability that he or she:

a. Thinks the tax code is unfair?

b. Thinks the tax code is unfair and makes less than $50,000?

c. Thinks the tax code is unfair or makes less than $50,000?

d. Explain the difference in the results in (b) and (c).

Contingency Table

Income Level

U.S. Trade Less than More than Total

Code $50,000 $50,000 ____________

Fair 225 180 405

Unfair 280_ 320_ 600_

Total 505 500 1,005