A researcher has two independent groups with ranked data with 20 participants in each group. When using a Mann-Whitney U test (assume assuming α = 0.05), the researcher has data that is statistically significant if…
A) the U statistic is less than 127
B) the U statistic is greater than 127
C) the U statistic is less than 113
D) The U statistic is greater than 113

Question

Quizplus · Accepted Answer

The critical value for a Mann-Whitney U test with 20 participants in each group and α = 0.05 is 127. Therefore, the researcher has data that is statistically significant if the U statistic is less than 127.

A Researcher Has Two Independent Groups with Ranked Data with 20