Random Variables, Random Process, Probability, Deep Dives, Statistics.
97.4) using the idealized Normal CDF, we get a value (0.41088–0.20522) = .20566 (or ~21%). This value is almost half the empirical value. This downward bias in the estimate is expected if you look at how much the idealized CDF deviates from the empirical version in the middle portion of the curve.