The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 7 - Exploring Data: Part I Review - Test Yourself - Page 187: 7.18b

Answer

Using Table A to determine the z score corresponding to the probability of 0.95: z = 1.645 Corresponding value of x is given by x = μ + zσ = 21 + 1.654 (3) = 25.935 minutes

Work Step by Step

Using Table A to determine the z score corresponding to the probability of 0.95: z = 1.645 Corresponding value of x is given by x = μ + zσ = 21 + 1.654 (3) = 25.935 minutes
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