A nonparametric test for the equivalence of two populations would be used instead of a parametric test for the equivalence of the population parameters if
A) the samples are very large.
B) the samples are not independent.
C) no information about the populations is available.
D) the parametric test fails to reject the null hypothesis.

Question

Quizplus · Accepted Answer

Nonparametric tests do not make assumptions about the population distributions, so they can be used when no information about the populations is known. They may also be used in cases where the assumptions for parametric tests are not met, such as when the sample sizes are small or the data is not normally distributed. A parametric test failing to reject the null hypothesis does not necessarily require the use of a nonparametric test.

A Nonparametric Test for the Equivalence of Two Populations Would