A queueing system has 1 server and two phases. The interarrival time is uniform between 20 and 50 seconds. The service times of the first phase is exponential with an average of 75 seconds, and the second phase exponential with an average of 90 seconds. Use a simulation run length of 1,000 arrivals. Explain what is the point estimate for the total number of customers and the time they will spend in the system?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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A queueing system has 1 server and two phases. The interarrival time is uniform between 20 and 50 seconds. The service times of the first phase is exponential with an average of 75 seconds, and the second phase exponential with an average of 90 seconds. Use a simulation run length of 1,000 arrivals. Explain what is the point estimate for the total number of customers and the time they will spend in the system?

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