Customer arrivals at a bank are random and independent; the probability of an arrival in any one-minute period is the same as the probability of an arrival in any other one-minute period. Answer the following questions, assuming a mean arrival rate of 4 customers per minute. a. What is the probability of exactly 5 arrivals in a one-minute period? (to 4 decimals) b. What is the probability of at least 5 arrivals in a one-minute period? (to 4 decimals)

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Customer arrivals at a bank are random and independent; the probability of an arrival in any one-minute period is the same as the probability of an arrival in any other one-minute period. Answer the following questions, assuming a mean arrival rate of 4 customers per minute.

a. What is the probability of exactly 5 arrivals in a one-minute period? (to 4 decimals)

b. What is the probability of at least 5 arrivals in a one-minute period? (to 4 decimals)

Customer arrivals at a bank are random and independent; the probability of an arrival in any one-minute period is the same as the probability
of an arrival in any other one-minute period. Answer the following questions, assuming a mean arrival rate of 4 customers per minute.
a. What is the probability of exactly 5 arrivals in a one-minute period?
(to 4 decimals)
b. What is the probability of at least 5 arrivals in a one-minute period?
(to 4 decimals)
Transcribed Image Text:Customer arrivals at a bank are random and independent; the probability of an arrival in any one-minute period is the same as the probability of an arrival in any other one-minute period. Answer the following questions, assuming a mean arrival rate of 4 customers per minute. a. What is the probability of exactly 5 arrivals in a one-minute period? (to 4 decimals) b. What is the probability of at least 5 arrivals in a one-minute period? (to 4 decimals)
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