Customers Arrive According to a Poisson Distribution

question 126

Multiple Choice

Customers arrive according to a Poisson distribution.The average number of customer arrivals per hour is three.The probability that four customers will arrive in the next two hours is:

• A)less than or equal to 0.10.
• B)greater than 0.10 but less than or equal to 0.12.
• C)greater than 0.12 but less than or equal to 0.14.
• D)greater than 0.14.

---

Definitions:

Hallucinations

Perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception.

Agoraphobia

An anxiety disorder characterized by intense fear and avoidance of places or situations where escape might be difficult or help might not be available.

Agora

In ancient Greece, a public open space used for assemblies and markets.

Pyromania

A psychological disorder characterized by an irresistible urge to start fires.