A sample standard deviation and sample size are given. Use the one-standard-deviation χ2-interval procedure to obtain...

A sample standard deviation and sample size are given. Use the one-standard-deviation χ2-interval procedure to obtain the specified confidence interval. s = 4, n = 11 , 95% confidence interval a) 2.795 to 3.51 b) 0.618 to 3.896 c) 2.956 to 6.373 d) 2.795 to 7.02

Solutions

Expert Solution

Solution :

Given that,

s = 4

s² = 16

²_L = ²_/2,df = 20.483

²_R = ²_{1 -} _/2,df = 3.247

The 95% confidence interval for is,

(n - 1)s² / ²_/2 < < (n - 1)s² / ²_{1 -} _/2

10 * 16 / 20.483 < < 10 * 16 / 3.247

2.795 < < 7.02

2.795 to 7.02

orchestra answered 1 year ago

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