Statistics: Informed Decisions Using Data (4th Edition)

by Sullivan III, Michael

Published by Pearson

ISBN 10: 0321757270

ISBN 13: 978-0-32175-727-2

Chapter 10 - Review - Review Exercises - Page 523: 10a

Answer

$χ2 = 26.508$

Work Step by Step

Here we have: $H_{o}$:σ = 15.7, $H_{1}: σ > 15.7$, n = 25, s = 16.5, df = n-1 = 24 $χ2 = \frac{n-1}{σ^{2}}s^{2} = \frac{24}{246.49}272.25 = 26.508$

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