Hey all - It's been a long time since I was in school looking at probability and statistics. i have a bit of a difficult question for me. I have two sets of data: Data Set A has a Mean of 7.9 and a standard deviation of 0.79. The other set of Data, Set B, has a mean of 10.1 and a STD Dev of 1.12. What I found interesting about this is that if you take one std dev above the mean of Set A you get 8.69. If you take one Std Dev below the mean of set B you get 8.98. I was wondering if you had a normal set of data and random, independent results, what is the probability that as you ran the calculations that Set A numbers would be larger then Set B? There is overlap obviously on the two sets if they were normal curves (which i assume) but i am not sure how to figure out the probability that Set A would be larger then Set B. Thanks for any help.