In a Wilcoxon signed-rank test, the test statistic is calculated as T = 75. If there are n = 15 observations for which the difference is not 0, and a two-tailed test is performed at the 5% significance level, what is an appropriate conclusion?
A) Reject the null hypothesis.
B) Don't reject the null hypothesis.
C) The test results are inconclusive.
D) Perform a parametric test.

Question

Quizplus · Accepted Answer

The critical value for a two-tailed Wilcoxon signed-rank test with n = 15 at the 5% significance level is typically higher than 75. Therefore, we do not reject the null hypothesis.

In a Wilcoxon Signed-Rank Test, the Test Statistic Is Calculated