The Basic Practice of Statistics 7th Edition

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

Chapter 12 - Introducing Probability - Check Your Skills - Page 298: 12.31

Answer

First we need to calculate z: z = $\frac{x-μ}{σ}$ = $\frac{1-0.8}{0.078}$ = 2.56 Determining corresponding probability from Table A, we get: P(Y $\gt$ 1) = P(z $\gt$ 2.56) = 1 - P(z $\lt$ 2.56) = 1 - 0.9948 = 0.0052

Work Step by Step

As given above
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