A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x overbar, is found to be 113, and the sample standard deviation, s, is found to be 10.
(a) Construct a 95% confidence interval about mu if the sample size, n, is 24.
(b) Construct a 95% confidence interval about mu if the sample size, n, is 17.
(c) Construct a 70% confidence interval about mu if the sample size, n, is 24.
(d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed?
Get Answers For Free
Most questions answered within 1 hours.