Students Arrive Randomly at the Help Desk of the Computer

question 100

Multiple Choice

Students arrive randomly at the help desk of the computer lab. There is only one service agent, and the time required for inquiry varies from student to student. Arrival rates have been found to follow the Poisson distribution, and the service times follow the negative exponential distribution. The average arrival rate is 12 students per hour, and the average service rate is 20 students per hour. On average, how long does it take to service each student?

• A) 1 minute
• B) 2 minutes
• C) 3 minutes
• D) 5 minutes
• E) 20 minutes

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Definitions:

Anterior Fontanel

The largest and most noticeable soft spot on a baby's skull, allowing for brain growth and situated at the junction of the frontal and parietal bones.

Lambdoid Sutures

The serrated joints connecting the parietal bones with the occipital bone in the skull, resembling the Greek letter lambda.

Coronal

Relating to the frontal plane that divides the body into anterior and posterior (front and back) portions.