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T-test and Wilcoxon Rank Sum Test

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To test the claim that there is no difference in the lifetimes of two brands of handheld video games, a researcher selects a sample of 11 video games of each brand. The lifetimes (in months) of each brand are shown here. At ?=0.01, can the researcher conclude that there is a difference in the distributions of lifetimes for the two brands?

Brand A 42 34 39 42 22 47 51 34 41 39 28
Brand B 29 39 38 43 45 49 53 38 44 43 32

(a) Solve using the t-test

(b) Solve using the Wilcoxon Rank Sum test

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This solution shows and explains the step-by-step procedure for conducting a t-test and a Wilcoxon Rank Sum Test to evaluate problems.

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