What Is the Expected Number of Customers in Service

question 12

Multiple Choice

What is the expected number of customers in service?

• A)0.40
• B)0.60
• C)0.17
• D)0.83

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Definitions:

Poisson Distribution

A probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space when these events occur with a known constant rate and independently of the time since the last event.

Discrete Random Variable

A type of random variable that can take on a countable number of distinct values.

Discrete Random Variable

A random variable that can take on a countable number of distinct values.

Variance

A measure of the dispersion or spread of a set of data points, indicating how much the data deviate from their mean.