Statistics: Informed Decisions Using Data (4th Edition)

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

Chapter 3 - Section 3.1 - Assess Your Understanding - Applying the Concepts - Page 137: 21c

Answer

Sample 2 & 3 overestimate the mean. Sample 1 underestimates the mean.

Work Step by Step

Population mean is 72.2. Means of sample 2 and 3 are 76.67 and 76.33 respectively; hence, they overestimate the mean. Mean of sample 1 is 70.67, which underestimates the population mean.
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