Question: 7.2 Express the two-sample median-test statistic U defined in Section 6.4 in the form of a linear rank statistic and use Theorem 7.3.2 to find

7.2 Express the two-sample median-test statistic U defined in Section 6.4 in the form of a linear rank statistic and use Theorem 7.3.2 to find its mean and variance. Hint: For the appropriate argument k, use the functions S(k)

defined as for (7.2.1).

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