Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

by Bluman, Allan

Published by McGraw-Hill Education

ISBN 10: 0078136334

ISBN 13: 978-0-07813-633-7

Chapter 3 - Data Description - Review Exercises - Section 3-2 - Page 179: 21

Answer

a. 0.856 b.-0.871

Work Step by Step

Use the data to get: $\bar x=68.1$ and $s=13.9$ Find the z values for a. A temperature of 80º $z=\frac{80-68.1}{13.9}=0.856$ b. A temperature of 56º $z=\frac{56-68.1}{13.9}=-0.871$

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