Exercise.
About 10% of the population is left-handed. Use the normal distribution to
approximate the probability that in a class of 150 students,
(a) at least 25 of them are left-handed.
(b) between 15 and 20 are left-handed.
Honors Exercise.
Let X be a normal random variable with mean 0 and variance 1. Compute E(X^n), where n is an integer more than 1
Research and Lecture notes 