Question

Suppose that you want to perform a hypothesis test to compare the means of two populations, using a paired sample.
For each part, decide whether you would use the paired t-test, the paired Wilcoxon signed-rank test, or neither of these tests, if preliminary data analyses of the sample of paired differences suggest that the distribution of the paired-difference variable is
a. Uniform.
b. Neither symmetric nor normal; the sample size is 132.
c. Moderately skewed but otherwise roughly bell shaped.


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  • CreatedAugust 13, 2015
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