The manufacturer of a hot tub is interested in testing two different heating elements for its product.
Question:
(a) Is there any reason to suspect that one unit is superior to the other? Use α = 0.05 and the Wilcoxon ranksum test.
(b) Use the normal approximation for the Wilcoxon ranksum test. Assume that α = 0.05. What is the approximate P-value for this test statistic?
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Related Book For
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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