Hypothesis testing-chi-square test of variance

Reference no: EM13107878

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

H0:

H1:

Test Statistic [Show procedure.]

P-value:

Conclusion (i.e. decision) about H0 [reject/fail to reject]

Reference no: EM13107878

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