SOLUTION: 1. A group of 463 first-year college students were asked, �About how many hours do you study during a typical week?� The mean response is 15.3 hours. Assume that the study time i

Question 1056850:
1. A group of 463 first-year college students were asked, �About how many hours do you study during a typical week?� The mean response is 15.3 hours. Assume that the study time is normally distributed with a population standard deviation of 8.5 hours. Construct a 99% confidence level interval for the mean study time of all first-year students.
Mean Proportion

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
99%CI width is z(0.995)*sd/sqrt(n)=2.576*8.5/sqrt(463)=1.02
the interval is (7.48,9.52)
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