Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0-32191-121-0
ISBN 13: 978-0-32191-121-6

Chapter 2 - Descriptive Statistics - Section 2.5 Measures of Position - Exercises - Page 112: 42

Answer

a. -1.21 b. Jan's age is below the average age. c. Not an unusual z-score

Work Step by Step

z = (x - μ) / σ = (24-28.1) / 3.4 = 1.21 Usual values have z score in the range -2 and 2
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.