According to the ABC news, 45% students rented their text-book. A random sample of 500 students were chosen to asked whether they rent their textbook instead buying textbook. Use the normal approximation to the binomial to approximate the probability that a. exact 250 of those surveyed stated "Yes" b. between 220 to 250 of those surveyed, inclusive, answered "yes" C. at least 260of those surveyed answered "yes"

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