I'm not a math wiz and I have to write a short paper which asks for 3 roles that the Binomial Theorem plays in probability and statistics. Maybe I'm over analyzing this but what da heck is meant by "role" it seems so vague. I'd like to do it on Approximating error, Combination distribution, and Population error. But are my choices more "example" like as opposed to "role" like.....ughhh.