Introductory Statistics 9th Edition

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

Chapter 6 - Section 6.4 - Determining the z and x Values When an Area Under the Normal Distribution Curve Is Known - Exercises - Page 256: 6.40

Answer

Area to the left of the x value = .05 From Table IV, this value of z is $z= -1.645$. Thus, it follows: x = μ+zσ = 15+(-1.645)(2.4) = 11.052 minutes

Work Step by Step

Area to the left of the x value = .05 From Table IV, this value of z is $z= -1.645$. Thus, it follows: x = μ+zσ = 15+(-1.645)(2.4) = 11.052 minutes
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.