Binomial Distrubition/Die rolling Question.

[derek10rr2]

How to Find the Probability of rolling at least 2 "sixes" in 6 rolls of a balanced die.

I am trying to solve using the Binominal Formula, P(X = r) = nCr p r (1-p)n-r

But am not really sure what the probability rates for success and failure should be or how to compute it.

Any advice?

Thanks.

 

[SW VandeCarr]

How to Find the Probability of rolling at least 2 "sixes" in 6 rolls of a balanced die.

I am trying to solve using the Binominal Formula, P(X = r) = nCr p r (1-p)n-r

But am not really sure what the probability rates for success and failure should be or how to compute it.

Any advice?

Thanks.

p(S)=1/6 n=6 r=2 I assume in your formula you mean: $$p^r (1-p)^{n-r}$$