Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 5 - Section 5.2 - Probability Distribution of a Discrete Random Variable - Exercises - Page 187: 5.13

Answer

Let N denote employees happy with their jobs, and M denote employees who are not happy with their jobs.
1562606466

Work Step by Step

In a sample of two employees, the number who is happy with their jobs can be 0 (given by MM), 1 (given by NM or MN), or 2 (given by NN). Thus, x can assume any of three possible values: 0,1 and 2. The probabilities of these three outcomes are calculated as follows: P(0) = P(MM) = 0.4225 P(1) = P(MN or NM) = P(MN) + P(NM) = .2275+.2275 = .4550 P(2) = P(NN) = .4225 Using these probabilities, we can write the probability distribution of x as in the table below.
Small 1562606466
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.