Arrivals to a bank automated teller machine (ATM) are distributed according to a Poisson distribution with a

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Arrivals to a bank automated teller machine (ATM) are distributed according to a Poisson distribution with a mean equal to three per 15 minutes.
a. Determine the probability that in a given 15-minute segment, no customers will arrive at the ATM.
b. What is the probability that fewer than four customers will arrive in a 30-minute segment?
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Business Statistics A Decision Making Approach

ISBN: 9780133021844

9th Edition

Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry

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