Question

In a certain​ country, the true probability of a baby being a boy is 0.527. Among the next seven randomly selected births in the​ country, what is the probability that at least one of them is a girl​?

Answer 1

Answer: 0.9887

Explanation:

Given : The true probability of a baby being a boy :
`0.527`

The number of selected births :
`7`

Now, the when next seven randomly selected births in the​ country, then the probability that at least one of them is a girl​ is given by :_

`\text{P(at least one girl)=1-P(none of them girl)}\\\\=1-(0.527)^7=0.988710510435\approx0.9887`

Hence, the probability that at least one of them is a girl​ =0.9887