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 $z=\frac{56-68.1}{13.9}=-0.871$
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
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