Which of these random variables has a binomial model?
A) The number of girls a family has out of the three children they will have.
B) The number of books we select out of a pile of 9 books that are non-fiction.
C) none of these
D) The number of children a family has until they have two boys.
E) The number of times a free throw is shot until one shot is made.

Question

Quizplus · Accepted Answer

The binomial model applies to situations with a fixed number of independent trials, each with two possible outcomes (success or failure). Option A fits this model as it involves a fixed number of trials (3 children) and two outcomes (girl or not a girl).

Which of These Random Variables Has a Binomial Model