The sample of a random sample of moviegoers shows that 40% purchase popcorn to eat while watching the movie. If a theater has 80 people in it, how many people should you expect to have purchased popcorn?
You can find the expected number of people who purchased popcorn by multiplying the total number of people in the theater by the percentage of people who purchase popcorn:
Expected number of people who purchased popcorn = 80 x 0.40 = 32
Therefore, you should expect 32 people to have purchased popcorn.