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
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