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.© BrainMass Inc. brainmass.com December 15, 2022, 8:04 pm ad1c9bdddf
Solution. Given s1=3.02, s2=2.14, n1=n2=25. We test
Step 1: Hypotheses:
H1: sigma1^2 is NOT equal to sigma2^2.
Step 2: ...
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.