The probability that at least 5 children out of 10 in a, Ask an Expert

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In a report given by a popular magazine it was stated that 60% of young children have blood leadlevels that could impair their neurological development. Assuming that aclass in a school is a random sample from the population of all children atrisk, the probability that at least 5 children out of 10 in a sample taken from a school may have a blood level that may impair development is?

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