Question

Construct the confidence interval for the population variance for the given values. Round your answers to...

Construct the confidence interval for the population variance for the given values. Round your answers to one decimal place. n=12, s2=12.8, and c=0.95

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Answer #1

95% confidence interval for 2 is

(n-1) S2 / /2 < 2 < (n-1) S2 / 1-/2

(12 - 1) * 12.8 / 21.920) <  2 < (12 - 1) * 12.8 / 3.816)

6.4234 <  2 < 36.8973

95% CI is (6.4 . 36.9)

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