To apply the Wilcoxon rank sum test to determine whether the location of population 1 is different from the location of population 2,the samples must be:
A)larger than 30.
B)independent.
C)drawn from normal populations.
D)drawn from matched pairs experiment.

Question

Quizplus · Accepted Answer

The Wilcoxon rank sum test is a nonparametric test that does not assume any specific distribution for the population. However, the samples must be independent for the test to be valid. Therefore, option B is the correct choice. Option A is incorrect because there is no minimum sample size requirement for the test. Option C is incorrect because the test is robust to non-normality. Option D is incorrect because the test is designed for independent samples, not matched pairs.

To Apply the Wilcoxon Rank Sum Test to Determine Whether