Exhibit 13.6 The Following Questions Refer to the Information and Output Below

question 93

Short Answer

Exhibit 13.6
The following questions refer to the information and output below.
The university computer lab has 10 computers which are constantly being used by students. Users need help from the one lab assistant fairly often. Students ask for help at a Poisson rate of with an average of 4 requests per hour for any one computer. The assistant answers questions as quickly as possible and the service time follows an exponential distribution with mean of 1 minute per help session. The following queuing analysis spreadsheet was developed from this information.
-Refer to Exhibit 13.6. Based on this report what is the average number of students waiting to be helped?

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Definitions:

FMVSS-121 Redundancy

A redundancy requirement specified in the Federal Motor Vehicle Safety Standards (FMVSS) 121, pertaining to the air brake systems in heavy vehicles, ensuring the system’s effectiveness even when part of it fails.

Pneumatic

In truck technology this term is used mainly to describe chassis air under pressure, as in pneumatic brakes or pneumatic suspension.

Yaw

Vehicle lateral tracking off the intended straight-ahead or turning radius; a vehicle traveling sideways in a skid would be an extreme case of yaw.

Wheelbase

Dimension of a tandem drive axle truck measured between the center of the front axle and the centerline of the tandem bogie. In a two-axle vehicle, it is the distance between the centerline of the front and rear axles.