A sample of 25 concession stand purchases at the october 22, Ask an Expert

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A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed a mean purchase of $5.29 with a standard deviation of$3.02. For the October 26 evening showing of the same movie, for a sample of 25 purchases the mean was $5.12 with a standard deviation of $2.14. The means appear very close, but not the variances.

At a=.05, is there a difference in variances?

Perform 5 steps hypothesis testing for: 9.22, 9.62, 9.66, &9.68

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Category:- Statistics and Probability
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