Suppose you want to use the Wilcoxon rank sum test to detect a shift in distribution 1

Question:

Suppose you want to use the Wilcoxon rank sum test to detect a shift in 1 to the right of 2 based on samples of size n1 = 6 and n2 = 8.
a. Should you use T1 or T*1 as the test statistic?
b. What is the rejection region for the test if α = .05?
c. What is the rejection region for the test if α = .01? Distribution
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