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{"ops":[{"insert":"According to a Harris Interactive poll, 52% of American college graduates have Facebook accounts\n(http:\/\/www.harrisinteractive.com\/harris_poll\/pubs\/Harris_Poll_2009_04_16.pdf). Suppose that this result\nis true for the current population of American college graduates.\na. Let x be a binomial random variable that denotes the number of American college graduates in\na random sample of 15 who have Facebook accounts. What are the possible values that x can\nassume?\nb. Find the probability that exactly 9 American college graduates in a sample of 15 have Facebook\naccounts.\n"}]}
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