Author Question: In the Wilcoxon rank-sum test, the null hypothesis may be expressed as:\(\style{font-family:Times ... (Read 309 times)

blkth103 · **on:** Feb 26, 2023

In the Wilcoxon rank-sum test, the null hypothesis may be expressed as:

\(\style{font-family:Times New Roman;}{H_0:\;{\overset˜\mu}_1-{\overset˜\mu}_2=\Delta_{\text{o}}}\)

If\(\style{font-family:Times New Roman;}{\Delta_{\text{o}}=0}\), then:

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the test is not valid.

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we can conclude that the null hypothesis is true and there is no difference in the two population medians only if the sample provides sufficient support for this assertion.

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there is insufficient evidence to reject the null hypothesis, but nothing is said about the validity of the null hypothesis.

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the median of population 1 is equal to the mean of population 2, provided both populations are heavily skewed.

reason44 · **Reply #1 on:** Feb 26, 2023

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