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A cable company claims that 88% of its customers are fully satisfied with their service. A competitor, who believes the figure to be far lower conducts an independent survey of 350 of the company's customers and finds that 287 are fully satisfied. Using the competitor's survey data, a 95% confidence interval for the proportion of all of the company's customers that are fully satisfied would be O (0.77,0.87) O (0.78, 0.86) O (0.74, 0.90) O (0.79,0.85)

A cable company claims that 88% of its customers are fully satisfied with their service. A competitor, who believes the figure to be far lower conducts an independent survey of 350 of the company's customers and finds that 287 are fully satisfied. Using the competitor's survey data, a 95% confidence interval for the proportion of all of the company's customers that are fully satisfied would be O (0.77,0.87) O (0.78, 0.86) O (0.74, 0.90) O (0.79,0.85)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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A cable company claims that 88% of its customers are fully satisfied with their service. A competitor, who believes the figure to be far lower conducts an independent survey of 350 of the company's customers and finds that 287 are fully satisfied. Using the competitor's survey data, a 95% confidence interval for the proportion of all of the company's customers that are fully satisfied would be O (0.77, 0.87) O (0.78, 0.86) O (0.74.0.90) O (0.79, 0.85)
Transcribed Image Text:A cable company claims that 88% of its customers are fully satisfied with their service. A competitor, who believes the figure to be far lower conducts an independent survey of 350 of the company's customers and finds that 287 are fully satisfied. Using the competitor's survey data, a 95% confidence interval for the proportion of all of the company's customers that are fully satisfied would be O (0.77, 0.87) O (0.78, 0.86) O (0.74.0.90) O (0.79, 0.85)
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