The Bank Manager of a Busy Downtown Location Found Herself

question 38

Multiple Choice

The bank manager of a busy downtown location found herself unable to find good teller help so she invested in an ATM to handle the routine withdrawals that tended to occupy an inordinate amount of the teller's time. Before she installed the ATM she found that customers were arriving on average every 2 minutes (Poisson distributed) and it took a teller 30 seconds (exponentially distributed) to process their request. The ATM is able to maintain a constant 30 second service time. What is the impact on system utilization?

• A)There is no change.
• B)Utilization has dropped by 15%.
• C)Utilization has dropped by 30%.
• D)Utilization has dropped by 45%.

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Definitions:

Lymphocytes

A type of white blood cell vital to the immune system, responsible for defending the body against infections and diseases by recognizing and targeting pathogens.

Sympathetic Nervous System

A part of the autonomic nervous system that activates what is often termed the fight or flight response during stressful situations.

Psychoneuroimmunology

The study of how psychological factors, the nervous system, and the immune system interact with each other.

Psychological

Pertaining to the mind or mental processes, especially in relation to behavior and emotions.