A Bank of Ten Machines Requires Regular Periodic Service

question 15

Multiple Choice

A bank of ten machines requires regular periodic service.Machine running time and service time are both exponential.Machines run for an average of 44 minutes between service requirements,and service time averages 6 minutes per machine. What is the probability that a machine will have to wait for service with two operators?

• A)654
• B)090
• C)346
• D)910
• E)016

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Definitions:

Soft Palate

The flexible, muscular part at the back of the roof of the mouth, separating the mouth from the nasopharynx during swallowing and speech.

Nasal Cavity

The large air space behind the nose, involved in breathing and housing the olfactory neurons.

Chemoreceptors

Sensory cells or organs specialized in detecting changes in chemical concentrations, often used in taste, smell, and regulation of breathing.

Ventilation

The process of moving air in and out of the lungs to facilitate gas exchange with the internal environment, primarily involving oxygen and carbon dioxide.