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 108, and the sample standard deviation s, is found to be 10. (a) Construct an 80% confidence interval about u if the sample size, n, is 11. (b) Construct an 80% confidence interval about u if the sample size, n, is 22. (c) Construct a 90% confidence interval about u if the sample size, n, is 11. (d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed? (a) Construct an 80% confidence interval about u if the sample size, n, is 11. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.) (b) Construct an 80% confidence interval about u if the sample size, n, is 22. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.) How does increasing the sample size affect the margin of error, =? O A. As the sample size increases, the margin of error decreases. O B. As the sample size increases, the margin of error increases. O C. As the sample size increases, the margin of error stays the same. (c) Construct a 90% confidence interval about u if the sample size, n, is 11. Lower bound: ; Upper bound