Many employers are concerned about employees wasting time by surfing the Internet and e-mailing friends during work hours. The article "Who Goofs Off 2 Hours a Day? Most Workers, Survey Says"† summarized data from a large sample of workers. Suppose that the CEO of a large company wants to determine whether the mean wasted time during an 8-hour workday for employees of her company is less than the mean of 120 minutes reported in the article. Each person in a random sample of 10 employees is asked about daily wasted time at work (in minutes). Participants would probably have to be guaranteed anonymity to obtain truthful responses. Suppose that the resulting data are as follows. 106, 110, 118, 129, 109, 132, 114, 112, 106, 127 (a) Compute a 95% confidence interval to estimate the mean wasted time (in minutes) during an 8-hour workday for all employees of this company. (Round your answers to two decimal places.) ( ________ , _________ ) Based upon this sample, we can be 95% confident that the true mean wasted time during an 8-hour workday for all employees of her company is between the lower value of__________ minutes and the upper value of_______
Many employers are concerned about employees wasting time by surfing the Internet and e-mailing friends during work hours. The article "Who Goofs Off 2 Hours a Day? Most Workers, Survey Says"† summarized data from a large sample of workers. Suppose that the CEO of a large company wants to determine whether the mean wasted time during an 8-hour workday for employees of her company is less than the mean of 120 minutes reported in the article. Each person in a random sample of 10 employees is asked about daily wasted time at work (in minutes). Participants would probably have to be guaranteed anonymity to obtain truthful responses. Suppose that the resulting data are as follows. 106, 110, 118, 129, 109, 132, 114, 112, 106, 127 (a) Compute a 95% confidence interval to estimate the mean wasted time (in minutes) during an 8-hour workday for all employees of this company. (Round your answers to two decimal places.) ( ________ , _________ ) Based upon this sample, we can be 95% confident that the true mean wasted time during an 8-hour workday for all employees of her company is between the lower value of__________ minutes and the upper value of_______
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Many employers are concerned about employees wasting time by surfing the Internet and e-mailing friends during work hours. The article "Who Goofs Off 2 Hours a Day? Most Workers, Survey Says"† summarized data from a large sample of workers. Suppose that the CEO of a large company wants to determine whether the mean wasted time during an 8-hour workday for employees of her company is less than the mean of 120 minutes reported in the article. Each person in a random sample of 10 employees is asked about daily wasted time at work (in minutes). Participants would probably have to be guaranteed anonymity to obtain truthful responses. Suppose that the resulting data are as follows.
106, 110, 118, 129, 109, 132, 114, 112, 106, 127
(a)
Compute a 95% confidence interval to estimate the mean wasted time (in minutes) during an 8-hour workday for all employees of this company. (Round your answers to two decimal places.)
( ________ , _________ )
Based upon this sample, we can be 95% confident that the true mean wasted time during an 8-hour workday for all employees of her company is between the lower value of__________
minutes and the upper value of_______
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