Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0321911210
ISBN 13: 978-0-32191-121-6

Chapter 1 - Introduction to Statistics - Section 1.1 An Overview of Statistics - Exercises - Page 7: 31

Answer

The population is all the pilots. The sample is the 202 pilots that were surveyed.

Work Step by Step

The question of interest is how many pilots have made a serious error due to sleepiness. Therefore, the population would be the total number of pilots. The sample, which is a subset of the population, would be the 202 pilots that were surveyed for this study.
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