So it says here I have a 0.35 probability of making a free throw. What is the probability of making four out of seven free throws? Well, this is a classic binomial random variable question. If we said the binomial random variable X is equal to number of made free throws from seven, I could say seven trials or seven shots, seven trials with the probability of success is equal to 0.35 for each free throw. So really this question amounts to what is the probability that my binomial random variable X is equal to four? Now what we're going to see is we can use a function on our TI-84 named binomec, or binomepdf I should say, binomepdf, which is short for binomial probability distribution function. And what you're going to want to do here is use three arguments.