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. With α = 0.05, what is the decision rule?
c. Calculate the value of the test statistic W.
d. Is the claim supported by the data? Explain.

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Married 84 75 83 67 70 76 67 63 6266 71 64 68 Unmarried