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LUMUive part must be machined to close tolerances to be acceptable to custo Production specifications call for a maximum variance in the lengths of the parts of Suppose the sample variance for 30 parts turns out to be s- whether the population variance specification is being violated. .0005. Use a = .05 (10. ) Consumer Reports uses a 100-point customer satisfaction score to rate the nation’s chain stores. Assume that from past experience with the satisfaction rating score, a popu standard deviation of o = 12 is expected. In 2012, Costco with its 432 warehou 40 states was the only chain store to earn an outstanding rating for overall quality. A s of 15 Costco customer satisfaction scores follows. 95 90 83 75 95 98 80 83 82 93 86 80 94 64 62 What is the sample mean customer satisfaction score for Costco? b. What is the sample variance? What is the sample standard deviation? d. Construct a hypothesis test to determine whether the population standard de of o = 12 should be rejected for Costco. With a .05 level of significance, what a. с. conclusion? 1. The variance in GMAT exam scores is 14,660 (the Graduate Management. sion Council's official website of the GMAT, June 17, 2016). A group of eco

LUMUive part must be machined to close tolerances to be acceptable to custo Production specifications call for a maximum variance in the lengths of the parts of Suppose the sample variance for 30 parts turns out to be s- whether the population variance specification is being violated. .0005. Use a = .05 (10. ) Consumer Reports uses a 100-point customer satisfaction score to rate the nation’s chain stores. Assume that from past experience with the satisfaction rating score, a popu standard deviation of o = 12 is expected. In 2012, Costco with its 432 warehou 40 states was the only chain store to earn an outstanding rating for overall quality. A s of 15 Costco customer satisfaction scores follows. 95 90 83 75 95 98 80 83 82 93 86 80 94 64 62 What is the sample mean customer satisfaction score for Costco? b. What is the sample variance? What is the sample standard deviation? d. Construct a hypothesis test to determine whether the population standard de of o = 12 should be rejected for Costco. With a .05 level of significance, what a. с. conclusion? 1. The variance in GMAT exam scores is 14,660 (the Graduate Management. sion Council's official website of the GMAT, June 17, 2016). A group of eco

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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9. An automotive part must be machined to close tolerances to be acceptable to customers. Production specifications call for a maximum variance in the lengths of the parts of .0004. Suppose the sample variance for 30 parts turns out to be s- whether the population variance specification is being violated. .0005. Use a = .05 to test (10. ) Consumer Reports uses a 100-point customer satisfaction score to rate the nation's major chain stores. Assume that from past experience with the satisfaction rating score, a population standard deviation of o = 12 is expected. In 2012, Costco with its 432 warehouses in 40 states was the only chain store to earn an outstanding rating for overall quality. A sample of 15 Costco customer satisfaction scores follows. 95 90 83 75 95 98 80 83 82 93 86 80 94 64 62 What is the sample mean customer satisfaction score for Costco? b. What is the sample variance? What is the sample standard deviation? Construct a hypothesis test to determine whether the population standard deviation of o = 12 should be rejected for Costco. With a .05 level of significance, what is your a. с. d. conclusion? 11. The variance in GMAT exam scores is 14,660 (the Graduate Management Admis- sion Council's official website of the GMAT, June 17, 2016). A group of economics
Transcribed Image Text:9. An automotive part must be machined to close tolerances to be acceptable to customers. Production specifications call for a maximum variance in the lengths of the parts of .0004. Suppose the sample variance for 30 parts turns out to be s- whether the population variance specification is being violated. .0005. Use a = .05 to test (10. ) Consumer Reports uses a 100-point customer satisfaction score to rate the nation's major chain stores. Assume that from past experience with the satisfaction rating score, a population standard deviation of o = 12 is expected. In 2012, Costco with its 432 warehouses in 40 states was the only chain store to earn an outstanding rating for overall quality. A sample of 15 Costco customer satisfaction scores follows. 95 90 83 75 95 98 80 83 82 93 86 80 94 64 62 What is the sample mean customer satisfaction score for Costco? b. What is the sample variance? What is the sample standard deviation? Construct a hypothesis test to determine whether the population standard deviation of o = 12 should be rejected for Costco. With a .05 level of significance, what is your a. с. d. conclusion? 11. The variance in GMAT exam scores is 14,660 (the Graduate Management Admis- sion Council's official website of the GMAT, June 17, 2016). A group of economics
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