The Basic Practice of Statistics 7th Edition

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

Chapter 21 - Comparing Two Means - Check Your Skills - Page 508: 21.24

Answer

(c) Yes: the SRS condition is okay, and large sample sizes make the Normality condition unnecessary

Work Step by Step

The following conditions are met before performing a hypothesis test: 1. Random sample or randomized experiment 2. ONE of the following: a) population is normally distributed b) sample size is large c) sample data shows evidence of normality with no outliers (boxplot, normal probability plot) 3. Independency
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