In a recent poll, 35% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Suppose you conducted a survey of 190 randomly selected students on your campus and find that 76 of them would prefer a boy. (a) Use the normal approximation to the binornial to approximate the probability that, in a random sample of 190 students, at least 76 would prefer a boy, assuming the true percentage is 35%. (b) Does this result contradict the poll? Explain. (a) The probability that at least 76 students would prefer a boy is (Round to four decimal places as needed.)

In a recent poll, 35% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Suppose you conducted a survey of 190 randomly selected students on your campus and find that 76 of them would prefer a boy. (a) Use the normal approximation to the binornial to approximate the probability that, in a random sample of 190 students, at least 76 would prefer a boy, assuming the true percentage is 35%. (b) Does this result contradict the poll? Explain. (a) The probability that at least 76 students would prefer a boy is (Round to four decimal places as needed.)

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter9: Counting And Probability

Section9.3: Binomial Probability

Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...

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