00:02
Okay, this question asks us the probability of having five children with none of them being girls.
00:11
So we can actually do this entirely without using the binomial distribution, but i'll do it both ways.
00:18
So if you didn't learn the binomial distribution at all, you could actually solve this problem because, well, we just have five successive births, and we know that they're all going to be boys.
00:31
So for the first child, we know it has a 50 % chance of being a boy.
00:37
Then for the second child, we know it's a boy, and so on, for all five children, which means it's a one and 32 chance.
00:53
And again, these are just multiplying the chances of getting a boy five times in a row...