A Service Counter Employs Two Servers

question 24

Multiple Choice

A service counter employs two servers.On average,a server requires 8 minutes to process a customer and service times follow an exponential distribution.Customers arrive at the counter at the rate of 12 per hour according to a Poisson distribution.The probability that there are no customers in the system is

• A)0.800
• B)0.536
• C)0.369
• D)0.111

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Definitions:

Lightning Strike

A natural electrical discharge of very short duration and high voltage between a cloud and the ground or within a cloud.

Forest Fire

An uncontrolled fire that occurs in the wilderness, often in wooded areas, which can have both natural and human causes.

Tolerance

The capacity of an organism to endure exposure to a particular substance or environmental condition without adverse effects.

Hemlock

A type of plant belonging to the family Apiaceae, some species of which are toxic, and others, such as the trees in the genus Tsuga, are valuable timber resources.