x-bar = 21, n = 32, = 4, H0: = 22, Ha: < 22
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We have provided a sample mean, sample size, and population standard deviation. In each case, use the one-mean z-test to perform the required hypothesis test at the 5% significance level.
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For the critical value approach reject H 0 if z 1645 z 21 22 432 141 ...View the full answer
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