Essentials of Statistics (5th Edition)

by Triola, Mario F.

Published by Pearson

ISBN 10: 0-32192-459-2

ISBN 13: 978-0-32192-459-9

Chapter 7 - Estimates and Sample Sizes - Review - Chapter Quick Quiz - Page 367: 9

Answer

2.571.

Work Step by Step

$\alpha=1-0.95=0.05.$ $\sigma$ is not known, hence we use the t-distribution with $df=sample \ size-1=6-1=5$ in the table. $t_{\alpha/2}=t_{0.025}=2.571.$

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