The eight observations were randomly selected from two populations (population A and population B) that were not necessarily normally distributed. Use the .05 significance level, a two-tailed test, and the Wilcoxon rank-sum test to determine whether there is a difference between the two populations.
Population A ....... 38, 45, 56, 57, 61, 69, 70, 79
Population B ....... 26, 31, 35, 42, 51, 52, 57, 62

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