Assuming that the probability of having a female child is 50% and the probability of having a male child is also 50%, what is the probability that a couple's first-born child will be female and that their second-born child will be male?
A) 20%
B) 25%
C) 50%
D) 75%

Question

Quizplus · Accepted Answer

The probability of having a female child on the first-born is 50% and the probability of having a male child on the second-born is also 50%. Since the events are independent, we can multiply the probabilities. 0.5 x 0.5 = 0.25 or 25%. Therefore, the probability that a couple's first-born child will be female and that their second-born child will be male is 25%.

Assuming That the Probability of Having a Female Child Is