Find the Critical Value or Values Of $\chi ^ { 2 }$

Essay

Find the critical value or values of $\chi ^ { 2 }$ based on the given information.
-In one town, monthly incomes for men with college degrees are found to have a standard deviation of $650. Use
a 0.01 significance level to test the claim that for men without college degrees in that town, incomes have a
higher standard deviation. A random sample of 22 men without college degrees resulted in incomes with a
standard deviation of $913.