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 min to provide service. The arrival rate follows Poisson distribution, and the service time follows a negative exponential distribution. Determine the probability that an arriving customer will wait for service.
A. 16.67%
B. 34.54%
C. 12.32%
D. 11.56%
A. 16.67%
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