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To test whether the population standard deviation differ significantly using Chi-Square test.

Tests in a professor's past statistics classes have scores with a standard deviation equal to 14.1. One of her current classes now has 27 test scores with a standard deviation of 9.3. Use a 0.01 level of significance to test the claim that the standard deviation of this current class is less than 14.1.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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