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 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 3.2 to find its mean and variance. Hint: For the appropriate argument k, use the functions S(k) defined as for (2.1)

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