The Basic Practice of Statistics 7th Edition

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

Chapter 17 - Tests of Significance: The Basics - Apply Your Knowledge - Page 405: 17.18a

Answer

$\approx-2.2$

Work Step by Step

$z=\frac{\overline{x}-\mu}{\sigma/\sqrt n}=\frac{0.4365-0.5}{0.2887/\sqrt{100}}\approx-2.2$
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