The Post Office Uses a Multiple Channel Queue, Where Customers

question 9

Essay

The post office uses a multiple channel queue, where customers wait in a single line for the first available window. If the average service time is 1 minute and the arrival rate is 7 customers every five minutes, find, when two service windows are open,
a.the probability both windows are idle.
b.the probability a customer will have to wait.
c.the average time a customer is in line.
d.the average time a customer is in the post office.

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Definitions:

Visual Cliff

An experimental apparatus used to measure infants’ perception of depth and their understanding of risks associated with apparent high drops.

Developmental Researchers

Individuals who study the various stages of psychological growth and changes that occur from infancy to adulthood.

Eleanor Gibson

Known for her work in developmental psychology, particularly for the "visual cliff" experiment which studies depth perception in infants to understand their learning processes.

Manipulate Objects

The action of handling, controlling, or applying physical operations to objects, exploring their characteristics and the effects of interactions.