One year, the mean age of an inmate on death row was 41.5 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is 39.8, with a standard deviation of 9.6. Construct a 95% confidence interval about the mean age. What does the interval imply? E Click the icon to view the table of critical t-values. Choose the correct hypotheses. Họ: H = 41.5 * 41,5 (Type integers or decimals. Do not round.) Construct a 95% confidence interval about the mean age. With 95% confidence, the mean age of a death row inmate is between 36.34 years and 43.26 years. (Round to two decimal places as needed.) What does the interval imply? O A. Since the mean age from the earlier year is not contained in the interval, there is sufficient evidence to conclude that the mean age had changed. O B. Since the mean age from the earlier year is not contained in the interval, there is not sufficient evidence to conclude that the mean age had changed. O C. Since the mean age from the earlier year is contained in the interval, there is not sufficient evidence to conclude that the mean age had changed. O D. Since the mean age from the earlier year is contained in the interval, there is sufficient evidence to conclude that the mean age had changed.
One year, the mean age of an inmate on death row was 41.5 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is 39.8, with a standard deviation of 9.6. Construct a 95% confidence interval about the mean age. What does the interval imply? E Click the icon to view the table of critical t-values. Choose the correct hypotheses. Họ: H = 41.5 * 41,5 (Type integers or decimals. Do not round.) Construct a 95% confidence interval about the mean age. With 95% confidence, the mean age of a death row inmate is between 36.34 years and 43.26 years. (Round to two decimal places as needed.) What does the interval imply? O A. Since the mean age from the earlier year is not contained in the interval, there is sufficient evidence to conclude that the mean age had changed. O B. Since the mean age from the earlier year is not contained in the interval, there is not sufficient evidence to conclude that the mean age had changed. O C. Since the mean age from the earlier year is contained in the interval, there is not sufficient evidence to conclude that the mean age had changed. O D. Since the mean age from the earlier year is contained in the interval, there is sufficient evidence to conclude that the mean age had changed.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Transcribed Image Text:One year, the mean age of an inmate on death row was 41.5 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is
39.8, with a standard deviation of 9.6. Construct a 95% confidence interval about the mean age. What does the interval imply?
E Click the icon to view the table of critical t-values.
Choose the correct hypotheses.
Ho: H
41.5
H1: p
41.5
(Type integers or decimals. Do not round.)
Construct a 95% confidence interval about the mean age.
With 95% confidence, the mean age of a death row inmate is between 36.34 years and 43.26 years. (Round to two decimal places as needed.)
What does the interval imply?
O A. Since the mean age from the earlier year is not contained in the interval, there is sufficient evidence to conclude that the mean age had changed.
O B. Since the mean age from the earlier year is not contained in the interval, there is not sufficient evidence to conclude that the mean age had changed.
O C. Since the mean age from the earlier year is contained in the interval, there is not sufficient evidence to conclude that the mean age had changed.
O D. Since the mean age from the earlier year is contained in the interval, there is sufficient evidence to conclude that the mean age had changed.
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