Mrs. Gallas claims she is a 70% free throw shooter, but Mr. Wilcox believes she is not that good. To prove her skills, she shoots 50 free throws and makes 28 shots.
To test Mrs. Gallas’ claim, we will assume that her claim is true (she is a 70% free throw shooter) and then estimate the probability of getting her result (28 out of 50) purely by chance.