The University Police Department Must Write, on Average, Five Tickets

question 74

Multiple Choice

The university police department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson
Distribution with a mean of 8.9. Find the probability that exactly four tickets are written on a
Randomly selected day.

• A).058433
• B).941567
• C).035656
• D).964344

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Definitions:

Positive Correlation

A relationship between two variables where an increase in one variable is associated with an increase in the other.

Independent Variable

In research, a variable that is manipulated or changed to observe its effects on a dependent variable.

Experimental Method

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Independent Variable

The variable in an experiment that is manipulated to observe its effect on a dependent variable.