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More than a decade ago, high levels of lead in the blood put 85% of children at risk. A concerted effort was made to remove lead from the environment. Now, suppose only 16% of children in the United States are at risk of high blood-lead levels.
(a) In a random sample of 184 children taken more than a decade ago, what is the probability that 50 or more had high blood-lead levels? (Round your answer to three decimal places.)
Answers: 1
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More than a decade ago, high levels of lead in the blood put 85% of children at risk. A concerted ef...
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