Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0-32191-121-0
ISBN 13: 978-0-32191-121-6

Chapter 5 - Normal Probability Distributions - Review Exercises - Page 286: 15

Answer

Answer: 0.4365

Work Step by Step

Want to find P( 0.05 < z < 1.71). One way to do this is to find the area of everything OUTSIDE this region then subtract it from 1 (Remember the total area under the normal curve is equal to 1) 1) Find P( z < 0.05) = 0.5199 2) Find P(z > 1.71) = 1 - 0.9564 = 0.0436 3) Finally, P( 0.05 < z < 1.71) = 1 - (0.5199 + 0.0436) = 0.4365
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