Question 5, 9.2.17-T HW Score: 41.27%, 8.25 of 20 points O Part 1 of 6 O Points: 0 of 1 Save A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 100, and the sample standard deviation, s, is found to be 12. (a) Construct a 95% confidence interval about u if the sample size, n, is 23. (b) Construct a 95% confidence interval about u if the sample size, n, is 15. (c) Construct a 90% confidence interval about u 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 95% confidence interval about u if the sample size, n, is 23. Lower bound: ; Upper bound: (Round to one decimal place as needed.)