40 OMIS 1000 C - Quiz 3 Version A - Solution

# 40 OMIS 1000 C - Quiz 3 Version A - Solution - OMIS 1000 C...

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OMIS 1000 C Quiz 3 A Mon, Oct 29 th 2007 You have 20 minutes to complete this quiz. The Apex Entertainment Company owns and operates movie theaters and rental stores in Manitoba. The president of the company is concerned that cable and satellite movie networks are hurting business because people can simply order a movie and watch it at home. She has asked you—a 4 th -year Schulich student—to assist her with her research. (10 marks) Write all your final answers in the appropriate boxes. Use the provided space to show your work. a. What must the sample size be if the mean number of movies ordered from satellite or cable networks by people in Winnipeg in December is to be estimated to within 0.1 movies with 99% confidence? Years of experience in Winnipeg has shown that the standard deviation of the mean number of movies is 2.55. ( Hint: be careful with rounding. ) (2 marks) Calculating n: 1 mark Rounding up: 1 mark up) round (must 4312 4311.5639 = = σ = α 2 2 2 / 1 . 0

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