[Solution Library] Tests in the teacher’s past statistics classes have scores with a standard deviation equal to 13.7 . One of his recent classes has 25 test
Question: Tests in the teacher’s past statistics classes have scores with a standard deviation equal to 13.7 . One of his recent classes has 25 test scores with a standard deviation of 8.5. Use a 0.01 significance level to test the claim that this current class has less variation than past classes
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