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Queueing models provide the basic frame work to get the optimum operating policies in production processes and service facilities. In transportation processes involving buses, aero planes, trains, ships, elevators and so on, bulk service queueing models are often encountered. Control chart technique analyzes the behavior of services and provides the prior idea about expected waiting time, maximum waiting time and minimum waiting time which in turn guarantees customer's satisfaction. Keeping this in view, the construction of control charts for waiting time in system of M /M (a, b) /1 bulk service queueing model is proposed in this paper.

Control Chart for Waiting Time in System of (M / M / 1) :( ? / FCFS) Queuing Model