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Use technology to construct the confidence intervals for the population variance sigmasquared and the population standard...

Use technology to construct the confidence intervals for the population variance sigmasquared and the population standard deviation sigma. Assume the sample is taken from a normally distributed population. cequals0.95​, sequals34​, nequals15

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Expert Solution

Solution :

Given that,

s = 34

s2 = 1156

2L = 2/2,df = 26.119

2R = 21 - /2,df = 5.629

The 95% confidence interval for is,

(n - 1)s2 / 2/2 < < (n - 1)s2 / 21 - /2

  14 * 1156 / 26.119 < < 14 * 1156 / 5.629

24.89 < < 53.62

(24.89 , 53.62)

orchestra answered 2 years ago
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