Assume the Sample Is Taken from a Normally Distributed Population $\sigma ^ { 2 } .$

question 54

Multiple Choice

Assume the sample is taken from a normally distributed population and construct the indicated confidence interval.
-The heights (in inches) of 20 randomly selected adult males are listed below. Construct a 99% confidence interval for the variance, $\sigma ^ { 2 } .$ $$\begin{array} { l l l l l l l l l l } 70 & 72 & 71 & 70 & 69 & 73 & 69 & 68 & 70 & 71 \\67 & 71 & 70 & 74 & 69 & 68 & 71 & 71 & 71 & 72\end{array}$$

• A)(1.47, 8.27)
• B)(21.61, 69.06)
• C)(1.35, 8.43)
• D)(2.16, 71.06)

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