A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 115, and the sample standard deviation, s, is found to be 9. (a) Construct a 98% confidence interval about μ if the sample size, n, is 23. (b) Construct a 98% confidence interval about μ if the sample size, n, is 14. (c) Construct a 95% confidence interval about μ if the sample size, n, is 23. (d) Should the confidence intervals in parts (a)-(c) have been computed if the population had not been normally distributed? (a) Construct a 98% confidence interval about μ if the sample size, n, is 23. Lower bound: nothing; upper bound: nothing (Round to one decimal place as needed.)