(Answered) Question teens texting a pew internet and american life

Statistics

Question: Teens' texting A Pew Internet and American Life Project survey found that 392 of 799 randomly selected teens reported texting with their friends every day.

(a) Calculate and interpret a 95% confidence interval for the population proportion p that would report texting with their friends every day.

(b) Is it plausible that the true proportion of American teens who text with their friends every day is 0.45? Use your result from part (a) to support your answer.

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