Before Production 0 3. While any genre can produce a blockbuster, Griffith suspected that some categories are more likely to do so than others. If he could stack the deck in his favor through storyline selection, he did not want to pass up the opportunity. a. Compare the total US. box-office gross of movies from the comedy genre with movies from other genres. Is there a statistically significant difference between the total U.S. gross of comedies and non-comedy movies? b. Griffith was not so sure about the results because they were contrary to his gut feelings. Maybe higher revenue accompanied higher investments? Calculate additionally the difference of U.S. ROls from movies of the comedy genre and of other movie genres. Is there a statistically signicant difference between the U.S. ROls? +- 4. Prevailing wisdom maintained that R-rated movies performed better than other movies. a. Is there a statistically signicant difference between the total U.S. gross of R- rated movies and movies with other ratings