# Binomial distribution and probability problem

## Homework Statement

A population has an average of 12 defects per 100 feet of wire sampled and inspected. What is the probability of finding 20 or fewer defects in a sample?

## Homework Equations

I think im supposed to use the binomial distribution b(x;n,p)

## The Attempt at a Solution

Where should i look to start?

Last edited: