A test is made of H0 125 versus H1 125 The sample mean is x 123, the sample size is n 100, and the population standard deviation is 20 a Find the value of the test statistic z b Find the critical region for a level 0 02 test c Do you reject H0 at the 0 02 level ...

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A test is made of H0 : = 125 versus H1: < 125. The sample

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A test is made of H0 : μ = 125 versus H1: μ < 125.

The sample mean is x̄ = 123, the sample size is n = 100, and the population standard deviation is σ = 20.

a. Find the value of the test statistic z.

b. Find the critical region for a level α = 0.02 test.

c. Do you reject H0 at the α = 0.02 level?

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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Question Posted: May 07, 2024 12:03 PM

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A test is made of H0 : = 125 versus H1: < 125. The sample

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Elementary Statistics

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