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A new surgery is successful 75% of the time. If the results of 10 such surgeries are randomly sampled, what is the probability that

A new surgery is successful 75% of the time. If the results of 10 such surgeries are randomly sampled, what is the probability that at least 9 of them are successful? Carry your intermediate computations to at least four decimal places, and round your answer to two decimal places.

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