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An NBC News/Wall Street Journal poll conducted at the end of the 20th century (September 9-12, 1999) asked a random sample of n = 1010 adult Americans, "Which one of the following do you consider to be the best American movie of the 20th century?" The choices given and the percentages who chose them were: Gone With the Wind 28%, Schindler's List 18%, Titanic 11%, Star Wars 11%, Casablanca 8%, The Godfather 7%, Citizen Kane 6%, The Graduate 1%, and Not sure 4%. In addition, 2% volunteered the answer "all of them," and 4% volunteered an answer not listed (https://www.pollingreport.com/ hollywoo.htm, September 29, 2002).
a. Was this asked as an open-form or closed-form question?
b. Do you think the form that was used was appropriate for trying to ascertain what movies adult Americans thought were the best of the 20th century? Explain.
c. Give one advantage and one disadvantage each for open-form and closed-form questions in this situation.
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