The null hypothesis, Ho: = 250, was tested against the alternative hypothesis, Ha: < 250

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The null hypothesis, Ho: µ = 250, was tested against the alternative hypothesis, Ha: µ < 250 .A sample of resulted in a calculated test statistic of z = - 1.18 . If s = 22.6, find the value of the sample mean,  . Find the sum of the sample data,∑  .
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Elementary Statistics

ISBN: 9780538733502

11th Edition

Authors: Robert R. Johnson, Patricia J. Kuby

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