I'm only just starting to learn SAS, so I am truely sorry if this question seems stupid, but I am working on homework for the Stats with SAS class, and I cannot figure this out.   My professor asked me to find the 95% confidence interval for the mean of a data set (which I did manage to do) and then he asked that I find the critical value of the upper limit fo that 95% confidence interval. How should I go about doing this?   PS- a word file containing my data and what code I have already completed is attached ... View more