Question: #10.56: 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 to be very close but not the variances. At α = .05, is there a difference in variances? Show all steps clearly, including an illustration of the decision rule.
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