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3. An industrial psychologist wants to estimate the mean time necessary for workers in her company to learn a new computer operating system. Her company has a total of 597 employees. Previous studies have indicated that the standard deviation in the amount of time necessary to learn the new operating system in 80 minutes. To estimate the mean time necessary to learn the operating system to within 15 minutes with 95% confidence, a sample of how many workers would be necessary? а. 77 b. 93 с. 111 d. 122

3. An industrial psychologist wants to estimate the mean time necessary for workers in her company to learn a new computer operating system. Her company has a total of 597 employees. Previous studies have indicated that the standard deviation in the amount of time necessary to learn the new operating system in 80 minutes. To estimate the mean time necessary to learn the operating system to within 15 minutes with 95% confidence, a sample of how many workers would be necessary? а. 77 b. 93 с. 111 d. 122

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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3. An industrial psychologist wants to estimate the mean time necessary for workers in her company to learn a new computer operating system. Her company has a total of 597 employees. Previous studies have indicated that the standard deviation in the amount of time necessary to learn the new operating system in 80 minutes. To estimate the mean time necessary to learn the operating system to within 15 minutes with 95% confidence, a sample of how many workers would be necessary? а. 77 b. 93 с. 111 d. 122
Transcribed Image Text:3. An industrial psychologist wants to estimate the mean time necessary for workers in her company to learn a new computer operating system. Her company has a total of 597 employees. Previous studies have indicated that the standard deviation in the amount of time necessary to learn the new operating system in 80 minutes. To estimate the mean time necessary to learn the operating system to within 15 minutes with 95% confidence, a sample of how many workers would be necessary? а. 77 b. 93 с. 111 d. 122
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