Question

Suppose that you want to perform a hypothesis test for a population mean. Assume that the variable under consideration has a symmetric nonnormal distribution and that the population standard deviation is unknown. Further assume that the sample size is large and that no outliers are present in the sample data.
a. Is it permissible to use the t-test to perform the hypothesis test? Explain your answer.
b. Is it permissible to use the Wilcoxon signed-rank test to perform the hypothesis test? Explain your answer.
c. Which procedure is better to use, the t-test or the Wilcoxon signed-rank test? Explain your answer.


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  • CreatedAugust 13, 2015
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