keywords: Customers, queuing system, efficiency, Poisson process
A queue is formed when the demand for service is greater than supply (i.e. the arrival or birth is greater than departure or death). Queuing theory permits the derivation and calculation of several performance measures including the average waiting time in the queue or system, the expected number waiting or receiving service and the probability of encountering the system in certain states, such as empty, full or having to wait a certain time to be served. An example of where queue can be formed is the banking sector. The data used for this project is a primary source collected through direct observation from First Bank of Nigplc Samuel Falodun branch, Akure, for a period of ten (10) working days between the hours of 8am and 12noon and was recorded based on the arrival pattern and service pattern of customers.