Math Solutions

(See Solution) a sample of 25 concession stand purchases at the October 22 matinee of Bride od Chuck showed a mean purchase of $5.29 with a standard deviation

Question: a sample of 25 concession stand purchases at the October 22 matinee of Bride od Chuck showed a mean purchase of $5.29 with a standard deviation of $3.02.. For the October 26 evening showing the same movie, for a sample of 25 purchases the mean was $5.12 with standard deviation of $2.14. The mean appears to be close, but not the variance. At a = 0.5, is there a difference in variance. Show all steps clearly

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