9. An easy way to understand Queuing Model formulas is to understand that L refers to Number of items while W refers to time. q refers to the queue and s refers to the system. So Lq refers to the number of units in the queue (waiting line). Ls refers to the number of items in the system (queue and service). Write out the formulas for the following: a. Average Wait time in the Queue b. Average Wait time in the System c. Average number of units in the Queue d. Average number of units in the System e. System utilization f. Probability of zero customers in the system

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