# Math Help - Binomial distribution

1. ## Binomial distribution

A bag contains 4 red, 5 blue and 6 green balls. The balls are indistinguishable except for their colour. A trial consists of drawing a ball at random from the bag, noting its colour and replacing it in the bag. A game is plated by performing 10 trials in all.

3. ## Re: Binomial distribution

P(X=0)=0.01734 P(X=1)=0.0867 P(X=2)=0.1951 So P(X<or=2)= 0.01734+0.0867+0.1951=0.299

So n=2 and k=1