A Multiple-Server Queueing System with an Exponential Arrival Rate and Service

question 33

Multiple Choice

A multiple-server queueing system with an exponential arrival rate and service time has a mean arrival rate of 4 customers per hour and a mean service time of 18 minutes per customer. The minimum number of servers required to keep the utilization factor under 1 is:

• A) 1.
• B) 2.
• C) 3.
• D) 4.
• E) 5.

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Definitions:

Spinal Nerves

Nerves that emerge from the spinal cord, facilitating communication between the body and the brain.

Dorsal and Ventral Roots

The two types of nerve roots; dorsal roots carry sensory information to the spinal cord, while ventral roots carry motor information from the spinal cord to the muscles.

Thymus Gland

A lymphoid organ situated in the neck of vertebrates that produces T-cells for the immune system.

Estrogen

A group of steroid hormones that promote the development and maintenance of female characteristics in the human body.