Suppose the Wilcoxon Signed-Rank Test Was Used on Seven Pairs

question 7

Multiple Choice

Suppose the Wilcoxon signed-rank test was used on seven pairs of data. If the calculated test statistic for a two-tailed test was found to be 5, at α = 0.05 we can conclude that

• A) the null hypothesis should not be rejected and there is no evidence that the median of the differences differs from zero.
• B) the null hypothesis should be rejected and that the groups are not all the same.
• C) the alternative hypothesis should not be rejected and the median of the differences is not zero.
• D) as T = 5 > Tcr = 2, we support the alternative hypothesis.
• E) the groups are different, as T = 5 > Tcr = 2.

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Definitions:

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