A couple would like to know what the probability is that out of five children, three will be girls. This is solved using which of the following?
A) Sum rule
B) Product rule
C) Chi-square test
D) Binomial expansion
E) Random sampling error

Question

Quizplus · Accepted Answer

This problem involves a binomial distribution, where each child has a 0.5 probability of being a girl (assuming equal probability for boys and girls). The binomial expansion is used to calculate the probability of a specific number of successes (in this case, three girls) out of a certain number of trials (five children).

A Couple Would Like to Know What the Probability Is