In a recent poll, 45% 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 170 randomly selected students on your campus and find that 84of them would prefer a boy. (a) Use the normal approximation to the binomial to approximate the probability that, in a random sample of 170students, at least 84would prefer a boy, assuming the true percentage is 45%. (b) Does this result contradict the poll? Explain. (a) The probability that at least 84 students would prefer a boy is
In a recent poll, 45% 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 170 randomly selected students on your campus and find that 84of them would prefer a boy. (a) Use the normal approximation to the binomial to approximate the probability that, in a random sample of 170students, at least 84would prefer a boy, assuming the true percentage is 45%. (b) Does this result contradict the poll? Explain. (a) The probability that at least 84 students would prefer a boy is
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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In a recent poll, 45% 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 170 randomly selected students on your campus and find that 84
of them would prefer a boy.
of them would prefer a boy.
(a) Use the normal approximation to the binomial to approximate the probability that, in a random sample of 170students, at least 84
would prefer a boy, assuming the true percentage is 45%.
would prefer a boy, assuming the true percentage is 45%.
(b) Does this result contradict the poll? Explain.
(a) The probability that at least 84 students would prefer a boy is
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