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3. Customers enter a supermarket at a constant rate of one every two minutes. (a) (3...

3. Customers enter a supermarket at a constant rate of one every two minutes.

(a) (3 points) What is the probability that less than 2 customers come in during the next half hour?

(b) (3 points) How many customers do you expect to come in between 2 and 4 PM?

Math   Statistics-And-Probability   
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