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As part of a lesson in survey design, Janette asks her study team of four students the following question: “Given the association between movie violence and crime, what kind of movie would you rather watch: romantic comedy or action?” All four indicate they would rather watch a romantic comedy. She states in her conclusion, “Obviously romantic comedies are the best.” Homework Help ✎

  1. If the population of movie goers is actually equally split between those who prefer romantic comedies versus action movies, what is the chance of finding a group of four who unanimously prefer one genre over the other? Is it plausible?

    Draw a tree diagram.
    Note: This is similar to flipping coins because each person only has two choices.

  2. Write a few sentences commenting on the validity of Janette’s methods and her conclusion.

    How was the question introduced?
    Also, how many choices were students given?