A recent analysis of census data suggests that married men have a higher median income than unmarried men (The Boston Globe, January 19,2010). Suppose the incomes (in $1,000s) of six married men and seven unmarried men produce the following representative results:
a. Set up the hypotheses to test the claim that the median income of married men is greater than the median income of unmarried men.
b. Calculate the value of the test statistic W.
c. With α = 0.05, what is the decision rule?
d. Is the claim supported by the data? Explain.