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

Multiple Choice

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.