Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321755936
ISBN 13: 978-0-32175-593-3

Chapter 9 - Inferences Based on Two Samples - Exercises 9.1 - 9.29 - Applying the Concepts - Basic - Page 424: 9.15a


Null hypothesis is that level of mean recall for both groups is same. Hence: $H_{o}: µ_{1} = µ_{2}$ or $µ_{1} - µ_{2} = 0$ $H_{a}: µ_{1} \ne µ_{2}$ or $µ_{1} - µ_{2} \ne 0$

Work Step by Step

As above
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