Thread: Simple Stats

Can't think at the moment and need some help.

Approx 51% off all births in the U.S. are boys.

If a woman has 3 children, find the probability that she does not have all boys.

All outcomes are not equally likely, so it can't just be 7/8, right?

Thanks in advance.

Would it be the complement of her having all boys? 0.51 * 0.51 * 0.51 = 0.13.
1-0.13 = 0.87?

Originally Posted by zsig013

Would it be the complement of her having all boys? 0.51 * 0.51 * 0.51 = 0.13.
1-0.13 = 0.87?

Yes, that method works.