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You have a random sample of 100 population members from each of two populations. You intend to use sample results to test the following hypotheses: H_{0}: Î¼_{1} â€“ Î¼_{2} __<__ 0 H_{a}: Î¼_{1} â€“ Î¼_{2} > 0

a. Suppose the sample results are xÌ…_{1} = 85 and xÌ…_{2} = 82. Compute the sample test statistic, z stat. Assume the population standard deviations are Ïƒ_{1} = 9 and Ïƒ_{2} = 11.

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