6.15 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. Population A Population B 4.3 3.5 4.6 4.7 3.8 3.7 5.3 5.3 5.8 5.4 4.7 5.2 4.4 5.1 3.9 4.4 a. Test for a difference in the medians of the two populations using an α = .05 Wilcoxon rank sum test. b. Place a 95% confidence interval on the difference in the medians of the two populations.

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6.15 Random samples of size n₁ = 8 and 1₂
respectively. The data are given in the following table.
Population A
Population B
= 8 were selected from populations A and B,
4.3 4.6
4.7
5.1 5.3 5.3 5.8 5.4
3.5 3.8 3.7 3.9 4.4
4.7 5.2 4.4
a. Test for a difference in the medians of the two populations using an a = .05
Wilcoxon rank sum test.
b. Place a 95% confidence interval on the difference in the medians of the two
populations.
Transcribed Image Text:6.15 Random samples of size n₁ = 8 and 1₂ respectively. The data are given in the following table. Population A Population B = 8 were selected from populations A and B, 4.3 4.6 4.7 5.1 5.3 5.3 5.8 5.4 3.5 3.8 3.7 3.9 4.4 4.7 5.2 4.4 a. Test for a difference in the medians of the two populations using an a = .05 Wilcoxon rank sum test. b. Place a 95% confidence interval on the difference in the medians of the two populations.
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