In a recent poll, 45% of survey respondents said that, if they only had one child, they would prefer the child to be
Posted: Mon Jul 11, 2022 11:26 am
In a recent poll, 45% of survey respondentssaid that, if they only had one child, they wouldprefer the child to be a boy. Suppose you conducted a surveyof 170 randomly selected students on your campus and findthat 84 of them would prefer a boy.
(a) Use the normal approximation to the binomial to approximatethe probability that, in a random sampleof 170 students, at least 84 would prefera boy, assuming the true percentage is 45%.
(b) Does this result contradict the poll? Explain.
(a) Use the normal approximation to the binomial to approximatethe probability that, in a random sampleof 170 students, at least 84 would prefera boy, assuming the true percentage is 45%.
(b) Does this result contradict the poll? Explain.