9.2.19 X A simple random sample of size n is drawn. The sample mean, X, is found to be 18.1, and the sample standard deviation, s, is found to be 4.8. +T Click the icon to view the table of areas under the t-distribution. (a) Construct a 95% confidence interval about u if the sample size, n, is 34. Lower bound: 16.45 ; Upper bound: 19.75 (Use ascending order. Round to two decimal places as needed.) (b) Construct a 95% confidence interval about p if the sample size, n, is 61. Lower bound: : Upper bound: (Use ascending order. Round to two decimal places as needed.)