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 zero, and a two-tailed test is performed at the 5% significance level, then:
A) reject the null hypothesis
B) don't reject the null hypothesis
C) the test results are inconclusive
D) perform a parametric test
E) perform a chi-square 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 greater than 75, so we do not reject the null hypothesis.

In a Wilcoxon Signed Rank Test, the Test Statistic Is