Suppose That You Want to Perform a Hypothesis Test to Compare

question 49

Essay

Suppose that you want to perform a hypothesis test to compare the means of two populations. Several procedures are available, namely, the pooled t-test, the nonpooled t-test, the Mann-Whitney test, the paired t-test, and the Wilcoxon signed-rank test. Before selecting the appropriate procedure, you need to look at the sample data to ascertain distribution type. What methods are available for doing this?

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