The __________________ is a general test to detect whether the probability distribution of one population is shifted to the right or to the left of the probability distribution of another population.
A)Sign test
B)Wilcoxon rank sum test
C)Wilcoxon signed ranks test
D)Kruskal-Wallis test

Question

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The Wilcoxon rank sum test, also known as the Mann-Whitney U test, is used to detect differences between two independent samples. It is designed to compare the location (median) of the two populations and determine if one population is shifted to the right or left of the other. The sign test (A) is used to compare paired data, the Wilcoxon signed ranks test (C) is used for paired data when the distributions are not necessarily normal, and the Kruskal-Wallis test (D) is used to compare three or more independent samples.

The __________________ Is a General Test to Detect Whether the Probability