Round your answers to four decimal places (e.g. 98.7654). (a) What is the probability that there are exactly 18 calls in 1 hour? (b) What is the probability that there are 3 or fewer calls in 30 minutes? (c) What is the probability that there are exactly 30 calls in 2 hours? (d) What is the probability that there are exactly 10 calls in 30 minutes?
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