One year, the mean age of an inmate on death row was 40 6 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 304, with a standard deviation of 8.4. Construct a 95% confidence interval about the mean age What does the interval imply? Click the icon to view the table of critical 1-values Choose the correct hypotheses H₂ T H₂ T (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 years and years (Round to two decimal places as needed) What does the interval imply? OA Since the mean age from the earler year is contained in the interval, there is sufficient evidence to conclude that the mean age had changed OB Since the mean age from the earler year is not contained in the interval, there is sufficient evidence to conclude that the mean age had changed OC. Since the mean age from the earler year is contained in the interval, there is not sufficient evidence to conclude that the mean age had changed OD. Since the mean age from the earler year is not contained in the interval, there is not sufficient evidence to conclude that the mean age had changed 00

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One year, the mean age of an inmate on death row was 40.6 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 39.4, with a
standard deviation of 8.4. Construct a 95% confidence interval about the mean age. What does the interval imply?
Click the icon to view the table of critical t-values.
Choose the correct hypotheses
H₂ T
H₂: 7
(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 years and years. (Round to two decimal places as needed.)
What does the interval imply?
OA. 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.
OB. 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.
OC. 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.
OD. 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.
Type here to search
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Transcribed Image Text:One year, the mean age of an inmate on death row was 40.6 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 39.4, with a standard deviation of 8.4. Construct a 95% confidence interval about the mean age. What does the interval imply? Click the icon to view the table of critical t-values. Choose the correct hypotheses H₂ T H₂: 7 (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 years and years. (Round to two decimal places as needed.) What does the interval imply? OA. 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. OB. 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. OC. 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. OD. 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. Type here to search 2 O E n U lyi *** 7 A Z ? (@)) alt $ 2 3 W E R SDA X 4 %6 The F G OM & B 411 5 6 7 8 9 HYUNOPOL K pause N M الا Rain off and on شاك الشال alt ctrl @ Ľ delete ← backspace home enter num lock T shift 7 home and 4 L 1 BANG & OL DO Up 8 1 end 5 C 2 1 ins
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