Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 7 - Review - Review Exercises - Page 394: 11a

Answer

0.0475

Work Step by Step

Let's find the z-score for 125: $z=\frac{X-μ}{σ}=\frac{125-100}{15}=1.67$ According to Table V, the area to the left of the standard normal curve for a z-score equal to 1.67 is 0.9525. But, we want the area to the right (will have score above 125) of the standard normal curve for a z-score equal to 1.67: $1-0.9525=0.0475$
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