Im not sure if I got the right answer

1. A sample of body fat percentages of 28 male bodybuilders was taken. The percentages were: (3.4%, 3.5%, 3.8%, 3.8%, 3.8%, 3.9%, 3.9%, 3.9%, 3.9%, 3.9%, 4.1%, 4.5%, 4.8%, 4.9%, 5.1%, 5.1%. 5.3%, 5.5%, 5.6%, 5.9%, 6%, 6.2%, 6.2%, 6.5%, 6.8%, 6.9%, 7.2%, 7.6%}. If you don't have a computer, ask me for the statistics; these are on uLearn. Construct a 95% confidence interval for the population mean of bodybuilders. C.I. = x+ (critical . value)- St. . Dev. Vn S= n = Critical . Value = a. I am 95% confident the population mean lies between 4.52% and 5.95% b. I am 95% confident the population mean lies between 4.59% and 5.56% c. I am 95% confident the population mean lies between 4.67% and 5.47% d. I am 95% confident the population mean lies between 3.25% and 6.63% e. I am 95% confident the population mean lies between 4.81% and 5.27%