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In: Statistics and Probability

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

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

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

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