Statistics: Informed Decisions Using Data (4th Edition)

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

Chapter 9 - Section 9.2 - Assess Your Understanding - Explaining the Concepts - Page 453: 58

Answer

The mean age of the 43 presidents is the population mean, not a sample mean.

Work Step by Step

Since 54.6 years is the mean of the entire population (all 43 presidents), it does not make sense to construct a confidence interval for the population mean age.
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