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Construct a 95% confidence interval for the population standard deviation σ of a random sample of...

Construct a 95% confidence interval for the population standard deviation σ of a random sample of 15 men who have a mean weight of 165.2 pounds with a standard deviation of 12.6 pounds. Assume the population is normally distributed.

Math   Statistics-And-Probability   
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Answer #1

Refer chi-square table or use excel formula "=CHISQ.INV.RT(0.975,14)" & "=CHISQ.INV.RT(0.025,14)" to find the critical values.

Round to one decimal place.

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