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During an hour of class, a professor anticipates six questions on average. a. What is the probability that in a given hour of class, exactly

During an hour of class, a professor anticipates six questions on average.

a. What is the probability that in a given hour of class, exactly six questions are asked?

b. What is the expected number of questions asked in a 20-minute interval?

c. What is the probability that no questions are asked over a 20-minute interval?

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