Chapter 8.2, Problem 22E

Disney’s Hannah Montana: The Movie opened on Easter weekend in April 2009. Over the three-day weekend, the movie became the number-one box office attraction (The Wall Street Journal, April 13, 2009). The ticket sales revenue in dollars for a sample of 25 theaters is as follows.

20,200	10,150	13,000	11,320	9700
8350	7300	14,000	9940	11,200
10,750	6240	12,700	7430	13,500
13,900	4200	6750	6700	9330
13,185	9200	21,400	11,380	10,800

1. a. What is the 95% confidence interval estimate for the mean ticket sales revenue per theater? Interpret this result.
2. b. Using the movie ticket price of $7.16 per ticket, what is the estimate of the mean number of customers per theater?
3. c. The movie was shown in 3118 theaters. Estimate the total number of customers who saw Hannah Montana: The Movie and the total box office ticket sales for the three-day weekend.