Question

what is the probability that 10 rolls of a fair die will show 6 fives?

Answer 1

do u know binomial distribution?

Answer 2

I am giving u a similar example...Suppose a coin is tossed three times then what's the probability of getting exactly two heads?

Answer 3

kind of

Answer 4

what will be the sample space?

Answer 5

10 C 6

Answer 6

S= { (H,H,H),(H,H,T), (H,T,H), (T,H,H), (T,T,H),(T,H,T), (H,T,T),(T,T,T)}

Answer 7

n(S)=8

Answer 8

fine?

Answer 9

yes thank you

Answer 10

then we have to find the probabilty of exactly two heads..
So favorable events=E = {(H,H,T), (H,T,H), (T,H,H)}

Answer 11

fine?

Answer 12

so probability of getting exactly two heads by tossing coin three times= 3/8

Answer 13

does it help u?

Answer 14

can we do it for this one? what is the probability that 10 rolls of a fair die will show 6 fives?