Use the data set to
(a) find the sample mean,
(b) find the sample standard deviation, and
(c) construct a 99% confidence interval for the population mean.
Assume the population is normally distributed.
The weekly time (in hours) spent weight lifting for 16 randomly selected college football players:
7.4, 5.8, 7.3, 7.0, 8.9, 9.4, 8.3, 9.3, 6.9, 7.5, 9.0, 5.8, 5.5, 8.6, 9.3, 3.8