The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, included the question, "During the average workday, how many hours do you spend attending meetings?" Let x = the number of hours a legal professional spends attending meetings during a typical workday. Suppose that x is normally distributed with a known standard deviation of 4.2. A sample of 250 legal professionals was surveyed, and the sample's mean response was 2 hours. Use the sample information to estimate u, the mean number of hours a legal professional spends attending meetings during a typical workday. The sampling distribution of x is normal with a mean of 2 and a standard deviation of 4.2 Use the following Distributions tool to develop a 90% confidence interval estimate of the mean number of hours a legal professional spends attending meetings during a typical workday.

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The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, included the question, "During the
average workday, how many hours do you spend attending meetings?" Let x = the number of hours a legal professional spends attending meetings
during a typical workday. Suppose that x is normally distributed with a known standard deviation of 4.2.
A sample of 250 legal professionals was surveyed, and the sample's mean response was 2 hours. Use the sample information to estimate u, the mean
number of hours a legal professional spends attending meetings during a typical workday.
The sampling distribution of x is normal with a mean
of 2
and a standard deviation
of 4.2
Use the following Distributions tool to develop a 90% confidence interval estimate of the mean number of hours a legal professional spends attending
meetings during a typical workday.
Standard Normal
Mean = 0.0
Standard Deviation = 1.0
.5000
.2500
.2500
-3
-2
-1
1
3
4
-0.674
0.674
Transcribed Image Text:The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, included the question, "During the average workday, how many hours do you spend attending meetings?" Let x = the number of hours a legal professional spends attending meetings during a typical workday. Suppose that x is normally distributed with a known standard deviation of 4.2. A sample of 250 legal professionals was surveyed, and the sample's mean response was 2 hours. Use the sample information to estimate u, the mean number of hours a legal professional spends attending meetings during a typical workday. The sampling distribution of x is normal with a mean of 2 and a standard deviation of 4.2 Use the following Distributions tool to develop a 90% confidence interval estimate of the mean number of hours a legal professional spends attending meetings during a typical workday. Standard Normal Mean = 0.0 Standard Deviation = 1.0 .5000 .2500 .2500 -3 -2 -1 1 3 4 -0.674 0.674
Use the following Distributions tool to develop a 90% confidence interval estimate of the mean number of hours a legal professional spends attending
meetings during a typical workday.
Standard Normal
Mean = 0.0
Standard Deviation = 1.0
.5000
2500
2500
-3
-2
-1
1
2
3
-0.674
0.674
You can be 90% confident that the interval estimate 1.56 v
to 2.44
includes the population mean p.
Transcribed Image Text:Use the following Distributions tool to develop a 90% confidence interval estimate of the mean number of hours a legal professional spends attending meetings during a typical workday. Standard Normal Mean = 0.0 Standard Deviation = 1.0 .5000 2500 2500 -3 -2 -1 1 2 3 -0.674 0.674 You can be 90% confident that the interval estimate 1.56 v to 2.44 includes the population mean p.
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