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8. Perform the test of hypotheses indicated, using the data from independent samples given. Use the...

8. Perform the test of hypotheses indicated, using the data from independent samples given. Use the critical value approach. Test H 0 : μ 1 − μ 2 = 75 vs. H a : μ 1 − μ 2 > 75 @ α = 0.025: n 1 = 45, x - 1 = 674, s 1 = 18 n 2 = 29, x - 2 = 591, s 2 = 13 Test H 0 : μ 1 − μ 2 = − 20 vs. H a : μ 1 − μ 2 ≠ − 20 @ α = 0.005: n 1 = 30, x - 1 = 137, s 1 = 8 n 2 = 19, x - 2 = 166, s 2 = 11

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