Test Hypotheses About a Population Proportion
-The Commute Times (In $6.25$

Test Hypotheses about a Population Proportion
-The commute times (in minutes) of 20 randomly selected adult males are listed below. Test the claim that the variance is less than $6.25$ . Use $\alpha = 0.05$ . Assume the population is normally distributed.
$\begin{array} { l l l l l l l l l l } 70 & 72 & 71 & 70 & 69 & 73 & 69 & 68 & 70 & 71 \end{array}$
$\begin{array} { l l l l l l l l l l } 67 & 71 & 70 & 74 & 69 & 68 & 71 & 71 & 71 & 72 \end{array}$