Elementary Statistics (12th Edition)

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

Chapter 13 - Nonparametric Statistics - 13-2 Sign Test - Basic Skills and Concepts: 5

Answer

There is a difference.

Work Step by Step

Since the sample size is 25 or less, the critical x values are found in the Table A-7: x=2 If the number of negative or positive signs is less than the critical value, then reject the null hypothesis: 1<2 -- Reject H0 There is sufficient evidence that there is a difference.
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