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# A Sample of 25 Concessions

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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 a- .05, is there a difference in variances? show all steps clearly, including an Illustration of the decision rule.

https://brainmass.com/statistics/hypothesis-testing/sample-25-concessions-269829

#### Solution Preview

Solution. Given s1=3.02, s2=2.14, n1=n2=25. We test

Step 1: Hypotheses:

H0: sigma1^2=sigma2^2
H1: sigma1^2 is NOT equal to sigma2^2.

Step 2: ...

#### Solution Summary

This solution shows step-by-step calculations in a statistical hypothesis on a sample of 25 concession stands to determine the difference in prices of the same movie.

\$2.49