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  3. 1. due to a major effort to remove lead from the e

1. Due to a major effort to remove lead from the enviroment over the years, now...

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Statistics

1. Due to a major effort to remove lead from the enviroment overthe years, now only 9% of children in the U.S. are at risk of highblood levels of lead. Consider a random sample of 200children.
a. Is it appropriate to use a normal approximation to the binomialdistribution? Explain.

b. Determine the probability that between 10 and 25 childrenhave high blood-lead levels.

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