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Question
Refer to the MegaStat/Excel output for the Wilcoxon rank sum test given in the table below.
At a significance level of .05, which one of the following rejection point conditions is correct regarding the null hypothesis, H0: D1 and D2 are identical probability distributions, and the alternative hypothesis of Ha: D1 is shifted to the left of D2.
A. We reject H0 and conclude that there is very strong evidence that the median value of the first sample significantly differs from the median value of the second sample.
B. We reject H0 and conclude that there is very strong evidence that the median value of the first sample is significantly less than the median value of the second sample.
C. We do not reject H0 and conclude there is not sufficient evidence that the median value of the first sample is significantly less than the median value of the second sample.
D. We do not reject H0 and conclude there is not sufficient evidence to conclude that the median value of the first sample is not significantly different than the median value of the second sample.
E. We do not reject H0 and conclude there is very strong evidence that the median value of the first sample is significantly less than the median value of the second sample.
Answer
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