I am having problems with statistics. I am not even sure where to start. We are studying probabilities. Binomial distribution and classical approach. I am not sure which formulas to use. Once I get the formulas I know how to plug in the numbers.

Here is a LINK to a theoretic article precisely about that. See page # 60 and onwards

A LINK to a little easier to follow article about the same!

Success !

:)