More than a decade ago, high levels of lead in the blood put 88% of children at risk. A concerted
(a) In a random sample of 200 children taken more than a decade ago, what is the probability that 50 or more had high blood lead levels?
(b) In a random sample of 200 children taken now, what is the probability that 50 or more have high blood lead levels?
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Question Posted: February 28, 2016 03:59:31