# Binomial Distribution 1

Introduction to the binomial distribution
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10 replies
1. Health & Beauty says:

Sal, that was confusing ?﻿

2. OBESE GAMING says:

How will the probability of getting 2 heads be the same as getting 2 tails and also same as getting 3 heads out of all five trials??? EXTREME CONFUSION SAL.﻿

3. Thomas Wagner says:

For the probability that two heads are flipped, why are there 5 possible places for the first head? If it's in the fifth position then there is no more room for a second head flip.﻿

4. nathan Vallez says:

thank you for confusing me even more﻿

5. Sasha Prilipsky says:

Thank you very much!﻿

6. Mohamed Farhoud says:

I believe at 9:33 there is an errata: Sal has mentioned
P(X=3)= 5!/(3!3!)
However: it should be: P(X=3)= 5!/(3!2!)﻿

7. Theuna Hime says:

I think sal, in the 3 heads case it should read as
P(X=3)= 5!/(3!2!)
because you solved it like above but written it as
P(X=3)= 5!/(3!3!)﻿

you bother taking the time to say completely irrelevant things; keep it short and straight to the point, we don't need you babbling and trying to be funny, we are just trying to understand this in the simplest and fastest way﻿

9. xNoMeRcy1 says:

He sounds like that crippled guy from family guy﻿