Question: Laboratory mice are given an illness for which the usual recovery rate is 1/6. A new drug is tested on 20 of the mice, and

Laboratory mice are given an illness for which the usual recovery rate is 1/6. A new drug is tested on 20 of the mice, and 8 of them recover. What is the probability that 8 or more would have recovered if the 20 mice had not been given the drug?

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