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Aptitude tests should produce scores with a large amount of variation so that an administrator can...

Aptitude tests should produce scores with a large amount of variation so that an administrator can distinguish between persons with low aptitude and persons with high aptitude. Two tests used by a certain industry are given. There are 21 subjects who receive the first test with a standard deviation of 10.3 points and 23 subjects who receive the second test with a standard deviation of 12.4 points. Is there sufficient evidence to conclude that there is a difference in the variability of the two tests? Use chi-square and report the p-value.

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