Question: Refer to Exercise 15.55. Test the hypothesis that no difference exists in the distributions of response times for the two stimuli, using the Wilcoxon signed-rank

Refer to Exercise 15.55. Test the hypothesis that no difference exists in the distributions of response times for the two stimuli, using the Wilcoxon signed-rank test. Use a rejection region for which a is as near as possible to the a achieved in Exercise 15.55, part a.
Excecise 15.55
An experiment was conducted to compare the response times for two different stimuli. To remove natural person-to person variability in the responses, both stimuli were presented to each of nine subjects, thus permitting an analysis of the differences between stimuli within each person. The table lists the response times (in seconds).

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