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The following eight observations were randomly selected from two populations that were not necessarily normally distributed.

Population 1: 38, 45, 56, 57, 61, 69, 70, 79
Population 2: 26, 31, 35, 42, 51, 52, 57, 62

Using a significance level of 0.1, carry out a two-tailed Wilcoxon rank-sum test to determine whether there is a difference between the two populations.

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