The service rate in queuing formulas is expressed as A. the mean number of customers that can be served per time period. B. the mean time between arrivals that need service. C. the mean time needed to serve a customer. D. the minimum number of customers served per time period

• A. the mean number of customers that can be served per time period.
Explanation:
The service rate specifies the average number of customers that can be serviced during a time period. It gives the capacity of the system.If the service rate is greater than the arrival rate, then the line will grow exponentially. Organization use this to determine waiting time and performance of specific processes in a project or organization.