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October 1, 2014

October 1, 2014

Posted by **brian** on Friday, November 20, 2009 at 4:55pm.

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?

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**nick**, Friday, November 20, 2009 at 6:10pm2 is the only blank prime

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