A random sample of 30 observations is selected from a normally distributed population. The sample variance is 12. In the 90% confidence interval for the population variance, the upper limit will be: $\begin{array}{|l|l|}
\hline A&\text {15.176 }\
\hline B&\text { 8.177}\
\hline C&\text { 19.652}\
\hline D&\text { 16.941}\
\hline
\end{array}$

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The Answer of A random sample of 30 observations is selected from a normally distributed population. The sample variance is 12. In the 90% confidence interval for the population variance, the upper limit will be: $\begin{array}{|l|l|}
\hline A&\text {15.176 }\
\hline B&\text { 8.177}\
\hline C&\text { 19.652}\
\hline D&\text { 16.941}\
\hline
\end{array}$

A Random Sample of 30 Observations Is Selected from a Normally