Critical value-test statistic-reject or not the null

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An instructor claims the average time to take a statistics test is more than 39 minutes. If a sample of 33 students took 43 minutes, is the instructor's claim true? Test at the 0.05 level. The population standard deviation is 12. List the null and alternate hypotheses. Also, critical value, test statistic, reject or not the null.

Reference no: EM1390737

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