Suppose that a bank has One Automatic Teller Machine.
Customers arrive at the machine at rate of 20 per hour (5 per ¼ hour). Assume a
What is the probability that 2 person will arrive
in a 15 minute interval (1/4 hour) ?
What is the probability that at least 5 person
will use a teller machine in a 15 minute interval?
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