Suppose You Want to Use the Wilcoxon Rank Sum Test

question 53

Essay

Suppose you want to use the Wilcoxon rank sum test to detect a shift in distribution 1 to the right of distribution 2, based on samples of sizes = 7 and = 9.
a. Should you use or as the test statistic?
b. What is the rejection region for the test if
c. What is the rejection region for the test if

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