Applied Statistics and Probability for Engineers, 6th Edition

Published by Wiley
ISBN 10: 1118539710
ISBN 13: 978-1-11853-971-2

Chapter 3 - Section 3-1 - Discrete Random Variables - Exercises - Page 67: 3-5


$1$ to $491$

Work Step by Step

There are $500$ total parts, and $10$ do not work, so there are $490$ that do work. There are two extreme cases: 1) If the first part selected is a nonconforming part, then the random variable is $1$. 2) If every single conforming part is selected before the nonconforming parts, then the random variable is $490+1=491$. Thus the range is $1$ to $491$
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