For a Single-Server, Single-Line, Single-Phase Waiting Line System, Where

question 82

Multiple Choice

For a single-server, single-line, single-phase waiting line system, where  represents the mean arrival rate of customers and  represents the mean service rate, what is the formula for the average number of customers in the system?

• A)  / 
• B)  / (    )
• C)  ² /  (    )
• D) 1 / (    )
• E)  /  (    )