4.115 Racial Bias? Four union members, two from a minority group, are assigned to four distinctly differ- ent one-person jobs, which can be ranked in order of desirability.

a. Define the experiment.

b. List the simple events in S.

c. If the assignment to the jobs is unbiasedthat is, if any one ordering of assignments is as probable as any other-what is the probability that the two people from the minority group are assigned to the least desirable jobs?