For a Single-Server,single-Line,single-Phase Waiting Line System,where $\lambda$ Represents the Mean Arrival Rate of Customers And

question 20

Multiple Choice

For a single-server,single-line,single-phase waiting line system,where $\lambda$ represents the mean arrival rate of customers and $\mu$ represents the mean service rate,what is the formula for the average time spent waiting in line?

• A)\(\lambda\) / \(\mu\)
• B)\(\lambda\)/ (\(\mu\)-\(\lambda\))
• C)\(\lambda\)² / \(\mu\)(\(\mu\)-\(\lambda\))
• D)1 / (\(\mu\)-\(\lambda\))
• E)pW Ref pdf pg 66

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Definitions:

Semilunar Valves

Valves located between the ventricles of the heart and the large arteries leaving the heart (the pulmonary artery and aorta) that prevent backflow of blood into the ventricles.

Diastole

The period during a heartbeat when the heart muscle is in a state of relaxation, permitting the chambers to be replenished with blood.

Carotid Artery Pulse

A pulse that can be felt on either side of the neck over the carotid arteries, used to assess heart rate and rhythm.

Apical Pulse

The heartbeat as heard with a stethoscope placed on the chest directly over the apex of the heart, used for accurate measurement of heart rate.