# J.D. Power and Associates calculates and publishes various statistics concerning car quality. The initial quality score measures

## Question:

a. What assumptions must be made in order for X to be distributed as a Poisson random variable? Are these assumptions reasonable?

Making the assumptions as in (a), if you purchased a 2012 Ford, what is the probability that the new car will have

b. Zero problems?

c. Two or fewer problems?

d. Give an operational definition for problem. Why is the operational definition important in interpreting the initial quality score?

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**Related Book For**

## Statistics For Managers Using Microsoft Excel

**ISBN:** 9780133130805

7th Edition

**Authors:** David M. Levine, David F. Stephan, Kathryn A. Szabat