In one area, monthly incomes of college graduates have a standard deviation of $650. It is believed that the
standard deviation of monthly incomes of non-college graduates is higher. A sample of 71 non-college
graduates are randomly selected and found to have a standard deviation of $950. Test the claim that
non-college graduates have a higher standard deviation. Use $\alpha$ = 0.05.

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The Answer of In one area, monthly incomes of college graduates have a standard deviation of $650. It is believed that the
standard deviation of monthly incomes of non-college graduates is higher. A sample of 71 non-college
graduates are randomly selected and found to have a standard deviation of $950. Test the claim that
non-college graduates have a higher standard deviation. Use $\alpha$ = 0.05.

In One Area, Monthly Incomes of College Graduates Have a Standard