Question
One? year, the mean age of an inmate on death row was 41.241.2 years. A sociologist...
One? year, the mean age of an inmate on death row was
41.241.2
years. A sociologist wondered whether the mean age of a? death-row inmate has changed since then. She randomly selects
3232
?death-row inmates and finds that their mean age is
40.440.4?,
with a standard deviation of
9.29.2.
Construct a? 95% confidence interval about the mean age. What does the interval? imply?
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