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At a particular working day, an operator received an average of 3 calls from 9am to 9.15am. Find the probability that the operator will receive

At a particular working day, an operator received an average of 3 calls from 9am to 9.15am. Find the probability that the operator will receive at least 1 call starting from 9.05am to 9.15am. Give your answer correct to four decimal places

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