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 - Section 10.3 - Assess Your Understanding - Skill Building - Page 503: 10b

Answer

t = 2.455

Work Step by Step

Here we have n = 40, x̅ = 48.3, s = 8.5 $t = \frac{48.3 - 45}{8.5/\sqrt 40} = \frac{3.3}{1.34} = 2.455$

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