When performing a Wilcoxon rank-sum test on the two independent samples shown here at α = 0.01, what is the alternative hypothesis? .
A) The samples have statistically different means.
B) The samples have the same median.
C) The samples have statistically different medians.
D) The samples have the same mean.

Question

When performing a Wilcoxon rank-sum test on the two independent samples shown here at α = 0.01, what is the alternative hypothesis? ​  .
A) The samples have statistically different means. 
B) The samples have the same median. 
C) The samples have statistically different medians. 
D) The samples have the same mean.

Quizplus · Accepted Answer

The Wilcoxon rank-sum test is a nonparametric test used to compare the medians of two independent samples. Therefore, the alternative hypothesis is that the samples have statistically different medians.

When Performing a Wilcoxon Rank-Sum Test on the Two Independent