A test is made of H0 : = 100 versus H1: 100. The sample

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A test is made of H0 : μ = 100 versus H1: μ ≠ 100.

The sample mean is x̄ = 97, the sample size is n = 75, and the population standard deviation is σ = 8.

a. Find the value of the test statistic z.

b. Find the critical region for a level α = 0.01 test.

c. Do you reject H0 at the α = 0.01 level?

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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