Problem#6 19. Age of Death-Row Inmates In 2002, the mean age of an in- mate on death row was 40.7 years, according to data obtained from the U.S. Department of Justice. 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 38.9, with a standard deviation of 9.6. Construct a 95% confidence interval about the mean age. What does the interval imply? Answers: Fail to Reject Ho: t(critical) = -2.0395, t-value = -1.06. Cl = 42.36 - 35.44

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Problem#6
19. Age of Death-Row Inmates In 2002, the mean age of an in-
mate on death row was 40.7 years, according to data obtained
from the U.S. Department of Justice. 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 38.9, with a standard deviation of 9.6.
Construct a 95% confidence interval about the mean age.
What does the interval imply?
Answers: Fail to Reject Ho: t(critical) = -2.0395, t-value = -1.06. CI = 42.36 - 35.44
Transcribed Image Text:Problem#6 19. Age of Death-Row Inmates In 2002, the mean age of an in- mate on death row was 40.7 years, according to data obtained from the U.S. Department of Justice. 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 38.9, with a standard deviation of 9.6. Construct a 95% confidence interval about the mean age. What does the interval imply? Answers: Fail to Reject Ho: t(critical) = -2.0395, t-value = -1.06. CI = 42.36 - 35.44
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