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thirty percent of students at a university are business major. a random sample of 20 students is selected what is the probability that among

thirty percent of students at a university are business major. a random sample of 20 students is selected what is the probability that among the students at least 10 are business major. B.what is the probability that at least 16 are not business major.C. what is the probability that exactly 10 are business major. D what is the probability that exactly 12are not business majors

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