Please solve using R Studio

2. A study was conducted of 90 adult male patients following a new treatment for congestive heart failure. One of the variables measured on the patients was the increase in exercise capacity (in minutes) over a 4-week treatment period. The previous treatment regime had produced an av- erage increase of 2 minutes. The researchers wanted to evaluate whether the new treatment had increased the value of / in comparison to the previous treatment. The data yielded y = 2.35 minutes and s = 1.05. (a) What type of confidence interval are you going to perform for this data? Justify your answer. (b) Calculate and interpret a 99% CI for the true mean increase in exercise capacity (in min- utes). (c) Using your interval, does the new treatment increase the exercise capacity when compared to the mean of the previous treatment