A sample of 25 concession stand purchases at the october 22, Ask an Expert

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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 $2.91. 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?

RQ: Are the receipt variances from the October 22 matinee different from receipt variances from the October 26 evening showing of the same movie?

A. Choose the Hypothesis

B. Specify the Decision Rule

C. Calculate the Test Statistic

D. Make the Decision

E. Give an interpretation of the Decision

F. P-value Method
1. Calculate the P-value, what is it?

2. Does that P-value support the Decision in Part D?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9377837

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