Apologies for this simple question, I'm sure it's been asked before, but I'm rusty on basic probabilities and my knowledge of terminology is long gone!
An event can be a pass or a fail. It always has 0.29 chance of passing, P. I want to know to get a given certainty X, how many events, N, it would take to achieve a given M successful events.
Sorry, I hope that's clear. So I have P, X and M, I would like to know N.
A walk through of an example would be very helpful.