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Listed below are the amounts, in millions of dollars, that Star Wars Return of Skywalker movie...

Listed below are the amounts, in millions of dollars, that Star Wars Return of Skywalker movie earned at 13 theaters in Southern California during the first two weeks of its release.

22, 27, 29, 21, 10, 10, 8, 7, 9, 11, 9, 4, 5

Construct a 90% confidence interval for the population average earnings during the first two weeks of all theaters for Star Wars Return of Skywalker movie.

Math   Statistics-And-Probability   
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Answer #1

Sample size (n) = 13

Standard deviation (s) = 8.4474

Confidence interval(in %) = 90

Required confidence interval = (13.2308-4.1757, 13.2308+4.1757)

Required confidence interval = (9.0551, 17.4065)

Interpretion: We are 90.0% confident that the true mean of the population lie between the interval 9.0551 and 17.4065.

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