- #1
tramp
- 6
- 0
Hi
I have some difficulties with following question.
A family has five children. Assuming that the probability of a girl on each birth was 1/2 and that the five births were independent, what is the probability the family has at least one girl, given they have at least one boy?
My solution is 1-(1/2)^4 = 15/16
However according to the book correct answer it 30/31.
Any ideas?
I have some difficulties with following question.
A family has five children. Assuming that the probability of a girl on each birth was 1/2 and that the five births were independent, what is the probability the family has at least one girl, given they have at least one boy?
My solution is 1-(1/2)^4 = 15/16
However according to the book correct answer it 30/31.
Any ideas?