In a certain country, the true probability of a baby being a girlgirl is 0.4740.474. Among the next sevenseven randomly selected births in the country, what is the probability that at least one of them is a boyboy?
77 or seven randomly selected births?
P(at least one boy) =
1 - P(no boys) =
( .474 )^7 ≈ .00538 ≈ .538%