We are interested in determining whether or not the variances of the sales at two music stores (A and B) are equal. A sample of 26 days of sales at store A has a sample standard deviation of 30 while a sample of 16 days of sales from store B has a sample standard deviation of 20. At 95% confidence the null hypothesis

a. should be rejected
b. should not be rejected
c. should be revised
d. None of these alternatives is correct.


B

Business

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