Consider the hypothesis test where the hypotheses are Ho: = 26.4 and Ha: < 26.4

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Consider the hypothesis test where the hypotheses are Ho: µ = 26.4 and Ha: µ < 26.4 . A sample of size 64 is randomly selected and yields a sample mean of 23.6.
a. If it is known that s = 12 , how many standard errors below µ = 26.4 is the sample mean,  = 23.6 ?
b. If , would you reject Ho? Explain.
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Elementary Statistics

ISBN: 9780538733502

11th Edition

Authors: Robert R. Johnson, Patricia J. Kuby

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