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

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Statistics

Aptitude tests should produce scores with a large amount ofvariation so that an administrator can distinguish between personswith low aptitude and persons with high aptitude. Two tests used bya certain industry are given. There are 21 subjects who receive thefirst test with a standard deviation of 10.3 points and 23 subjectswho receive the second test with a standard deviation of 12.4points. Is there sufficient evidence to conclude that there is adifference in the variability of the two tests? USE CHI-SQUARE andreport the p-value.

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