Students Arrive Randomly at the Help Desk of the Computer

question 99

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. How many students, on average, will be waiting in line at any one time?

• A) 0.9 students
• B) 1.5 students
• C) 3 students
• D) 4 students
• E) 36 students

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A process of growth, progress, or evolution, often referring to economic, social, or technological advancement.

Gay Men

Males who experience sexual, romantic, and/or emotional attractions to other males.

Male Heterosexuals

Men who are romantically and sexually attracted exclusively to individuals of the opposite sex.

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The process of causing someone or something to lose respect or the belief in their credibility.