Exhibit 13.3 The Following Questions Refer to the Information Below

question 95

Essay

Exhibit 13.3
The following questions refer to the information below.
A company has recorded the following customer inter-arrival times and service times for 10 customers at one of its single teller service lines. Assume the data are exponentially distributed and the 10 data points represent a reasonable sample.
-Refer to Exhibit 13.3. What is the average time a customer spends in the system?

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Definitions:

Stress Exposure

The experience of or exposure to events or circumstances that can lead to physical or emotional stress responses in the body.

Lymphocyte Levels

The concentration of lymphocytes, a type of white blood cell, within the blood, which is an important indicator of immune system health.

HIV

Human Immunodeficiency Virus, a virus that attacks the immune system, leading to AIDS if not treated.

AIDS

Acquired Immunodeficiency Syndrome, a life-threatening condition caused by the human immunodeficiency virus (HIV) which severely damages the immune system.