A sample of 25 concession stand buys at the October 22 matinee of Bride of Chucky showed the mean purchase of $5.29 with the standard deviation of $3.02. For the October 26 evening showing of same movie, for a sample of 25 buys 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 the difference in variances? Show all steps clearly, including an illustration of decision rule.