Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 7 - Estimates and Sample Sizes - Review - Chapter Quick Quiz - Page 373: 9



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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