The Basic Practice of Statistics 7th Edition

by Moore, David S.; Notz, William I.; Fligner, Michael A.

Published by W. H. Freeman

ISBN 10: 146414253X

ISBN 13: 978-1-46414-253-6

Chapter 21 - Comparing Two Means - Chapter 21 Exercises - Page 509: 21.30b

Answer

nonresponse bias.

Work Step by Step

Not all of the children will be in the sample, thus it is a nonresponse bias.

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