Using the following data, the Wilcoxon Signed-Rank hypothesis test is used to test the hypothesis that the test results of a treatment after training are greater than the test results before the treatment. The Wilcoxon critical value is 3 for n=7 with a 0.05 significance level. What decision should be made regarding the null hypothesis?
A) Reject the null hypothesis and conclude that the "after" is greater than "before"
B) Reject the null hypothesis and conclude that the "before" is greater than "after"
C) Fail to reject the null hypothesis
D) Reject the null hypothesis and conclude that there is no difference between the "before" and "after"

Question

Using the following data, the Wilcoxon Signed-Rank hypothesis test is used to test the hypothesis that the test results of a treatment after training are greater than the test results before the treatment. The Wilcoxon critical value is 3 for n=7 with a 0.05 significance level. What decision should be made regarding the null hypothesis? 
A) Reject the null hypothesis and conclude that the "after" is greater than "before" 
B) Reject the null hypothesis and conclude that the "before" is greater than "after" 
C) Fail to reject the null hypothesis 
D) Reject the null hypothesis and conclude that there is no difference between the "before" and "after"

Quizplus · Accepted Answer

Since the Wilcoxon critical value is 3 and the test statistic value obtained from the sample data is greater than 3, we reject the null hypothesis and conclude that the "after" test results are greater than the "before" test results. Therefore, the correct answer is A.

Using the Following Data, the Wilcoxon Signed-Rank Hypothesis Test Is