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HYPOTHESES ABOUT VARIANCES A college dean claims that standard deviation of students’ ages is no more...

HYPOTHESES ABOUT VARIANCES
A college dean claims that standard deviation of students’ ages is no more than 3 years. A sample of 25 students’ ages yields a standard deviation of 3.8 years. At the .05 level, is there evidence to reject this claim?
Math   Statistics-And-Probability   
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