Question

. Assume the samples are from populations that are normally distributed. Construct the indicated confidence intervals...

. Assume the samples are from populations that are normally distributed. Construct the indicated confidence intervals for both (a) the population variance σ 2 and (b) the population standard deviation σ.

c = 0.99, s = 5.7, n = 42

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Answer #1


n = 42




Lower Limit =
Upper Limit =
99% Confidence interval is ( 19.5744 , 62.1868 )
( 19.5744 < < 62.1868 )

Part b)

( 19.5744 < < 62.1868 )

CI for  population standard deviation σ.

( 4.4243 < < 7.8859 )

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