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    Statistics - Variances

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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 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.

    © BrainMass Inc. brainmass.com June 3, 2020, 10:44 pm ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/statistics-variances-246901

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