Math

StatisticsQ&A LibraryTeenagers' use of emoticons in school writing. Refer to the Pew Internet and American Life Project (Apr. 2008) sur- vey of the writing habits of U.S. teenagers, Exercise 7.69 (p. 343). Recall that in a random sample of 700 teenag- ers, 448 admitted to using at least one informal element in school writing assignments. [Note: Emoticons, such as using the symbol “:)" to represent a smile, and abbrevia- tions, such as writing "LOL" for "laughing out loud," are considered informal elements.] Is there evidence to indi- cate that less than 65% of all U.S. teenagers have used at least one informal element in school writing assignments? Test the relevant hypotheses using a = .05.Start your trial now! First week only $4.99!*arrow_forward*

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