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In: Statistics and Probability

The random sample (3,5,6,8,9,11) is selected from a normal population. Construct a 90% confidence interval estimate...

The random sample (3,5,6,8,9,11) is selected from a normal population. Construct a 90% confidence interval estimate for the sample standard deviation.

Solutions

Expert Solution

Values ( X )
3 16
5 4
6 1
8 1
9 4
11 16
Total 42 42

Mean

Standard deviation



n = 6




Lower Limit =
Upper Limit =
90% Confidence interval is ( 3.7939 , 36.6656 )
( 3.7939 < < 36.6656 )

For sample standard deviation

( 1.9478 < < 6.0552 )

orchestra answered 3 years ago
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