The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 20 - Inference about a Population Mean - Check Your Skills - Page 477: 20.26

Answer

(c) the data can be regarded as an SRS from the population.

Work Step by Step

Since knowledge of population standard deviation is not required and the data is mostly not perfectly normal, the data can be regarded as an SRS from the population for safe use of t procedure.
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