Answer
(a) z = -1.50
(b) An age of 23 is about 1.50 standard deviations below the mean.
(c) Not unusual
Work Step by Step
z = (x - μ) / σ = (23-28.1) / 3.4 = 1.50
Usual values have z score in the range -2 and 2
Elementary Statistics: Picturing the World (6th Edition)
by Larson, Ron; Farber, Betsy
Published by
Pearson
ISBN 10:
0321911210
ISBN 13:
978-0-32191-121-6
Chapter 2 - Descriptive Statistics - Section 2.5 Measures of Position - Exercises - Page 112: 46
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
