Question: Statistics Test Scores Tests in the authors past statistics classes have scores with a standard deviation equal to 14.1. One of his recent classes has

Statistics Test Scores Tests in the author’s past statistics classes have scores with a standard deviation equal to 14.1. One of his recent classes has 27 test scores with a standard deviation of 9.3. Use a 0.01 significance level to test the claim that this current class has less variation than past classes. Does a lower standard deviation suggest that the current class is doing better?

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