Suppose you are testing the null hypothesis that a population mean is less than or equal to 80, against the alternative hypothesis that the population mean is greater than 80. If the sample size is 49 and alpha = .10, the critical value of z is __. -1.28 1.645 1.28 2.33 -1.645
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The null hypothesis (H0) is that the population mean is less than or equal to 80. The alternative hypothesis (H1) is that the population mean is greater than 80. Show more…
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