Business, 30.07.2021 04:10 punani

The manager of a grocery store in Decatur currently provides special service to people who still use checks to pay for food. They have a separate pay/bag line for people who insist on waiting for a dollar total to pull out their checkbook and start writing. On average, 30 customers per hour arrive at the checking pay/bag line and they can be modeled with a Poisson distribution. The clerk at this line can handle an average rate of 35 customers per hour and their service can be modeled with exponential distribution. For the service rate in question 6, what is the probability of having more than four check writers in the system?
a. 67%
b. 75%
c. 33%
d. 25%

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