Find the confidence level and α for a 91​% confidence interval. What is the confidence​ level? _______ ​(Type an integer or a​ decimal.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter10: Statistics
Section10.4: Distributions Of Data
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Find the confidence level and α for a 91​% confidence interval.
What is the confidence​ level?
_______
​(Type an integer or a​ decimal.)
8.1.25
Question Help
A government bureau publishes annual price figures for new mobile homes. A simple random sample of 36 new mobile homes yielded the following prices, in thousands of dollars. Assume that the population
standard deviation of all such prices is $6.6 thousand, that is, $6,600. Use the data to obtain a 99.7% confidence interval for the mean price of all new mobile homes.
Click the icon to view a table of prices of new mobile homes.
The 99.7% confidence interval is from $
to $
(Round to the nearest dollar as needed.)
i
Prices of New Mobile Homes
Prices ($1000s) of 36 Randomly Selected New Mobile Homes
66.9
69.3
58.6
57.9
64.3
62.1
54.5
72.3
62.5
67.3
74.7
62.4
57.4
66.0
60.7
56.1
48.7
72.0
49.6
56.4
71.7
59.1
64.2
63.7
55.9
51.8
53.7
55.9
77.8
77.3
61.3
74.3
58.3
69.0
63.2
78.0
Print
Done
Transcribed Image Text:8.1.25 Question Help A government bureau publishes annual price figures for new mobile homes. A simple random sample of 36 new mobile homes yielded the following prices, in thousands of dollars. Assume that the population standard deviation of all such prices is $6.6 thousand, that is, $6,600. Use the data to obtain a 99.7% confidence interval for the mean price of all new mobile homes. Click the icon to view a table of prices of new mobile homes. The 99.7% confidence interval is from $ to $ (Round to the nearest dollar as needed.) i Prices of New Mobile Homes Prices ($1000s) of 36 Randomly Selected New Mobile Homes 66.9 69.3 58.6 57.9 64.3 62.1 54.5 72.3 62.5 67.3 74.7 62.4 57.4 66.0 60.7 56.1 48.7 72.0 49.6 56.4 71.7 59.1 64.2 63.7 55.9 51.8 53.7 55.9 77.8 77.3 61.3 74.3 58.3 69.0 63.2 78.0 Print Done
8.2.69
Question Help
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 $1.82
million. (Note: The sum of the data is $112.40 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 curve.
The 95% confidence interval is from $
million to $
million.
(Round to two decimal places as needed.)
Investment Data
5.31
5.80
5.42
9.74
2.89
5.49
5.40
5.66
4.50
8.63
5.85
6.85
4.58
7.85
9.17
4.85
8.30
6.11
Print
Done
Transcribed Image Text:8.2.69 Question Help 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 $1.82 million. (Note: The sum of the data is $112.40 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 curve. The 95% confidence interval is from $ million to $ million. (Round to two decimal places as needed.) Investment Data 5.31 5.80 5.42 9.74 2.89 5.49 5.40 5.66 4.50 8.63 5.85 6.85 4.58 7.85 9.17 4.85 8.30 6.11 Print Done
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