A simple random sample with n = 54 provided a sample mean of 22.5 and a sample

Question:

A simple random sample with n = 54 provided a sample mean of 22.5 and a sample standard deviation of 4.4.
a. Develop a 90% confidence interval for the population mean.
b. Develop a 95% confidence interval for the population mean.
c. Develop a 99% confidence interval for the population mean.
d. What happens to the margin of error and the confidence interval as the confidence level is increased?