Assume that the probability of any newborn baby being a boy is one half and that...
Assume that the probability of any newborn baby being a boy is one half and that all births are independent. If a family has three children (no twins), what is the probability of the event that none of them are boys?
Homework Answers
Answer
this is a binomial distribution with n = 3 and p = 1/2 or 0.5
we have to find the probability that none of the 3 child is a boy
setting n = 3, r = 0 and p = 0.5
this implies
=
=
= 0.1250
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