A Single-Phase Waiting-Line System Meets the Assumptions of Constant Service

Multiple Choice

A single-phase waiting-line system meets the assumptions of constant service time or M/D/1. Units arrive at this system every 10 minutes on average. Service takes a constant 6 minutes. What is the average length of the queue, L_q, in units?

A) 0.450
B) 0.133
C) 4.167
D) -2.083
E) 6