A Wilcoxon rank sum test for comparing two independent samples involves two samples of sizes 6 and 9. The alternative hypothesis is that the location of population 1 is to the left of the location of population 2. Using a 0.05 significance level, the appropriate critical values are 31 and 65.

Question

Quizplus · Accepted Answer

The given critical values are incorrect. For a Wilcoxon rank sum test with sample sizes 6 and 9 at a 0.05 significance level and a left-tailed test, the appropriate critical values are 18 and 50.

A Wilcoxon Rank Sum Test for Comparing Two Independent Samples