Data on investments in the high-tech industry by venture capitalists are compiled by a corporation. A random sample of 18 venture-capital investments in a certain business sector yielded the accompanying data, in millions of dollars. Determine and interpret a 95% confidence interval for the mean amount, µ, of all venture-capital investments in this business sector. Assume that the population standard deviation is $1.94 million. (Note: The sum of the data is $123.07 million.) Click here to view the investment data, Click here to view page 1 of the table of areas under the standard normal curve, Click here to view page 2 of the table of areas under the standard normal curv The 95% confidence interval is from $ million to $ million. Investment data (Round to two decimal places as needed.) 5.95 6.42 6.61 9.82 3.71 5.54 6.64 6,35 4.33 9,04 6.07 7.57 4,45 8.63 10.11 5,04 9,50 7.29

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Data on investments in the high-tech industry by venture capitalists are compiled by a corporation. A random sample of 18 venture-capital investments in a certain business sector yielded the accompanying data, in
millions of dollars. Determine and interpret a 95% confidence interval for the mean amount, µ, of all venture-capital investments in this business sector. Assume that the population standard deviation is $1.94 million.
(Note: The sum of the data is $123.07 million.)
Click here to view the investment data.
Click here to view page 1 of the table of areas under the standard normal curve,
Click here to view page 2 of the table of areas under the standard normal curv
The 95% confidence interval is from $
million to $
million.
Investment data
(Round to two decimal places as needed.)
5.95
6.42
6.61
9.82
3.71
5.54
6.64
6.35
4.33
9.04
6.07
7.57
4.45
8.63
10.11
5.04
9.50
7.29
Transcribed Image Text:Data on investments in the high-tech industry by venture capitalists are compiled by a corporation. A random sample of 18 venture-capital investments in a certain business sector yielded the accompanying data, in millions of dollars. Determine and interpret a 95% confidence interval for the mean amount, µ, of all venture-capital investments in this business sector. Assume that the population standard deviation is $1.94 million. (Note: The sum of the data is $123.07 million.) Click here to view the investment data. Click here to view page 1 of the table of areas under the standard normal curve, Click here to view page 2 of the table of areas under the standard normal curv The 95% confidence interval is from $ million to $ million. Investment data (Round to two decimal places as needed.) 5.95 6.42 6.61 9.82 3.71 5.54 6.64 6.35 4.33 9.04 6.07 7.57 4.45 8.63 10.11 5.04 9.50 7.29
According to a study of political prisoners, the mean duration of imprisonment for 34 prisoners with chronic post-traumatic stress disorder (PTSD) was 31.7 months. Assuming that o = 43 months, determine a 90%
confidence interval for the mean duration of imprisonment, µ, of all political prisoners with chronic PTSD. Interpret your answer in words.
Click here to view Page 1 of the table of areas under the standard normal curve.
Click here to view Page 2 of the table of areas under the standard normal curve.
......
A 90% confidence interval for the population mean is from
months to
months.
(Round to one decimal place as needed.)
Transcribed Image Text:According to a study of political prisoners, the mean duration of imprisonment for 34 prisoners with chronic post-traumatic stress disorder (PTSD) was 31.7 months. Assuming that o = 43 months, determine a 90% confidence interval for the mean duration of imprisonment, µ, of all political prisoners with chronic PTSD. Interpret your answer in words. Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. ...... A 90% confidence interval for the population mean is from months to months. (Round to one decimal place as needed.)
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