Question: 5 suppose we obtained data on vein size after application...

5. Suppose we obtained data on vein size after application of a nitroglycerin ointment in a sample of 60 patients. The mean vein size is found to be 8.4mm with an SD of 1.8. Using a t distribution table, what are the confidence limits for a 95% confidence interval? For a 99% confidence interval?