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8.45 A company randomly selected nine office employees and secretly monitored their computers for one month. The times (in hours) spent by these employees using their computers for nonjob-related activities (playing games, personal communications, etc.) during this month are as follows: 7 9 8 1 6 12 11 4 14 Assuming that such times for all employees are approximately normally distributed, make a 95% confidence interval for the corresponding population mean for all employees of this company.

8.45 A company randomly selected nine office employees and secretly monitored their computers for one month. The times (in hours) spent by these employees using their computers for nonjob-related activities (playing games, personal communications, etc.) during this month are as follows: 7 9 8 1 6 12 11 4 14 Assuming that such times for all employees are approximately normally distributed, make a 95% confidence interval for the corresponding population mean for all employees of this company.

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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Hi there,

I don't know how to solve this one, can you please show how to calculate the standard deviation for this as well as the confidence interval?

Thank you

8.45 A company randomly selected nine office employees and secretly monitored their computers for one month. The times (in hours) spent by these employees using their computers for nonjob-related activities (playing games, personal communications, etc.) during this month are as follows: 7 9 8 1 12 4 14 1 6 Assuming that such times for all employees are approximately normally distributed, make a 95% confidence interval for the corresponding population mean for all employees of this company.
Transcribed Image Text:8.45 A company randomly selected nine office employees and secretly monitored their computers for one month. The times (in hours) spent by these employees using their computers for nonjob-related activities (playing games, personal communications, etc.) during this month are as follows: 7 9 8 1 12 4 14 1 6 Assuming that such times for all employees are approximately normally distributed, make a 95% confidence interval for the corresponding population mean for all employees of this company.
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