Using Normal Approximation to Binomial Probability, Problem 3

In this video, we demonstrate how to use the technique of normal approximation to binomial probability, which is often used to simplify a difficult cumulative binomial probability problem. For example, here is the type of problem this video will help you solve: we are conducting n = 32 Bernoulli trials that each have two possible outcomes (success or failure) and we want to find the probability that the number of successes (x) is at least 19.