The primary difference between the null hypothesis of the two-sample t test and the corresponding nonparametric Wilcoxon rank sum test is:
A)the Wilcoxon test presumes equality between the medians of the two samples.
B)the Wilcoxon test presumes equality between the means of the two samples.
C)the Wilcoxon test presumes equality between the medians of the two populations.
D)the Wilcoxon test presumes equality between the means of the two populations.

Question

Quizplus · Accepted Answer

The primary difference between the null hypothesis of the two-sample t test and the corresponding nonparametric Wilcoxon rank sum test is that the Wilcoxon test presumes equality between the medians of the two populations instead of means. Therefore, option C is the correct answer.

The Primary Difference Between the Null Hypothesis of the Two-Sample