In reply to Chris Hemedinger.

I had an opposite experience. A homework question asked to find the probability that a random individual would have height less than 64 inches if the distribution of heights is normal with a mean of 68 inches and a standard deviation of 2.5 inches. I converted the problem to a z-score and looked up the probability in the printed table in the back of the book. My son rolled his eyes, whipped out his TI-84, went to the screen of statistical functions, and computed normalcdf(-1E99, 64, 68, 2.5) = 0.0548 in about five seconds. Boy, did I feel like a fossil!