The owner of an amusement park has decided to open a second entry booth and hire another employee to service customers entering the park. Customers arrive at the rate of 20 per hour and will wait in a single line until one of the two employees is available to provide service. The average service time of both employees is 2 minutes to provide service. The arrival rate follows Poisson distribution, and the service time follows a negative exponential distribution. Determine the average number of customers waiting in the system.

a. 0.75
b. 0.89
c. 0.08
d. 0.98


a. 0.75

Business

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