Moviegoers. A moviegoer is defined as a person who goes to the movies at least once a month. From the article Hollywood Demographics on the Indiewire website, we obtained the following data on moviegoers in the United States and Canada. The first two columns provide an age distribution; the third column gives the percentage of people in each age group who are moviegoers.

Age group Percentage of Percentage

(years) population moviegoers 2–11 14 11 12–17 8 13 18–24 10 12 25–39 21 11 40–49 14 10 50–59 14 9 60 & over 19 7 A person from among those living in either the United States or Canada is selected at random.

a. Find the probability that the person is a moviegoer.

b. Find the probability that the person is between 18 and 24 years old, given that he or she is a moviegoer.

c. Interpret your answers in parts

(a) and

(b) in terms of percentages.