A simple random sample of size n is drawn from a population thatis normally distributed. The sample​ mean, x overbar​, is found tobe 110​, and the sample standard​ deviation, s, is found to be10.
​(a) Construct an 80​% confidence interval about μ if the sample​size, n, is 13.
​(b) Construct an 80​% confidence interval about μ if the sample​size, n, is 27.
​(c) Construct a 90​% confidence interval about μ if the sample​size, n, is 13.
​(d) Could we have computed the confidence intervals in parts​(a)-(c) if the population had not been normally​ distributed?
****** Need lower bound and upper bound *******
