In a certain country, the true probability of a baby being a boy boy is 0.524 0.524. among the next eight eight randomly selected births in the country, what is the probability that at least one of them is a girl girl?
The event A is that it will be born at least one girl among 8 babies. The opposite event to A is event B that it will born all boys among 8 babies. [tex]P(B)=(0.524)^8=0.0056839[/tex], [tex]P(A)1-P(B)=1-0.0056839=0.9943161[/tex].