For Exercises 17–22, we are taking a random sample from a normal population with unknown.
17. Confidence level 90%, sample size 16, sample mean 10, sample standard deviation 5
8.2.17
(a) (b) We are told that the population is normal. (c) (7.8, 12.2); We are 90% confident that the population mean lies between 7.8 and 12.2.
(d)