A Random Sample of Size 20 Taken from a Normally

Short Answer

A random sample of size 20 taken from a normally distributed population resulted in a sample variance of 32. The lower limit of a 90% confidence interval for the population variance would be: $\begin{array}{|l|l|}\hline\text { A. } & 52.185 . \\\hline \text { B. } & 20.375 . \\\hline \text { C. } & 20.170 . \\\hline \text { D. } & 54.931 . \\\hline\end{array}$