?In 20 and 21, determine whether the study depicts an observational study or a designed
Chapter 1, Problem 20(choose chapter or problem)
In Problems 20 and 21, determine whether the study depicts an observational study or a designed experiment.
20. A parent group examines 25 randomly selected PG-13 movies and 25 randomly selected PG movies, records the number of sexual innuendos and curse words that occur in each, and then compares the number of sexual innuendos and curse words between the two movie ratings.
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