A bank is interested in studying the number of people who use the
ATM located outside its office late at night.On average, 1.6 customers
used the ATM during any 10 minute interval between 9 pm and
Midnight.
i. What is the probability of exactly 3 customers using the ATM
during any 10 minute interval?
ii. What is the probability of 3 or fewer customer using the ATM
during any 20 minute interval?
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