Decide Whether Applying One-Standard-Deviation Chi-Square Procedures to the Given Data $\begin{array} { l l l l l l } 57 & 59 & 61 & 64 & 72 & 76 \end{array}$

Essay

Decide whether applying one-standard-deviation chi-square procedures to the given data appears reasonable. Explainyour answer.
-Lifetimes (in hours)for a random sample of 12 batteries are as follows: $\begin{array} { l l l l l l } 57 & 59 & 61 & 64 & 72 & 76 \end{array}$ $\begin{array} { l l l l l l } 80 & 86 & 93 & 95 & 100 & 102 \end{array}$