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In the study of the wide ranges in the academic success of college freshmen, one obvious...

In the study of the wide ranges in the academic success of college freshmen, one obvious factor is the amount of time spent studying. At the, test the 0.05 significance level, test the claim that the standard deviation is more than 4.00 hours. The sample consists of 30 randomly selected freshmen who have a standard deviation of 5.33 hours.

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