In 2002, the mean age of an inmate on death row was 40.7 years with a standard deviation of 9.6 years according to 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 years. Construct the 95% confidence interval for the current mean age of death-row inmates. In 2002, the mean age of an inmate on death row was 40.7 years with a standard deviation of 9.6 years according to 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 years. Construct the 95% confidence interval for the current mean age of death-row inmates. (36.109, 41.691) (34.243, 43.557) (35.439, 42.361) (35.574, 42.226) (34.529, 43.271)
In 2002, the
In 2002, the mean age of an inmate on death row was 40.7 years with a standard deviation of 9.6 years according to 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 years. Construct the 95% confidence interval for the current mean age of death-row inmates.
(36.109, 41.691)
(34.243, 43.557)
(35.439, 42.361)
(35.574, 42.226)
(34.529, 43.271)
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