# Question: One or more specific minor birth defects occur with probability

One or more specific, minor birth defects occur with probability .0001 (that is, 1 in 10,000 births). If 20,000 babies are born in a given geographic area in a given year, can we calculate the probability of observing at least one of the minor defects using the binomial or normal approximation to the binomial? Explain.

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