Random samples of size n1 8 and n2 8 were selected from populations A and B, respectively The data are given in the following table a Test for a difference in the medians of the two populations using an 05 Wilcoxon rank sum test b Place a 95 confidence interval on the difference in the medians of the two populations Population A Population B 4 3 4 6 47 5 1 5 3 53 58 54 3 5 3 8 3 7 3 9 44 4 7 5 4 4

Question: Random samples of size n1 = 8 and n2 = 8 were selected from populations A and B, respectively. The data are given in the

Random samples of size n1 = 8 and n2 = 8 were selected from populations A and B, respectively. The data are given in the following table.

a. Test for a difference in the medians of the two populations using an Î± = .05 Wilcoxon rank sum test.
b. Place a 95% confidence interval on the difference in the medians of the two populations.

Population A Population B 4.3 4.6 47 5.1 5.3 53 58 54 3.5 3.8 3.7 3.9 44 4.7 5 4.4

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