Question

The probability of giving birth to a girl is 1/2. what is the probability that a family with 6 children will have at least 2 girls?

Answer 1

Hey, the answer to ur question is........
Total girls=2
Total children=6
Therefore, p(getting 2 girl children)=2/6=1/3
Hope this helps u..........

Answer 2

Let the probability of giving birth to a girl is
`p=0.5`.

The number of girls X in a family with 6 children follows binomial distribution.

The probability mass function of binomial random variable X is

`P(X=x)=C(n,6)p^x(1-p)^(n-x)`.

Here
`n=6,p=0.5`

`image`

The required probability is

`image`