Elementary Statistics (12th Edition)

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

Chapter 8 - Hypothesis Testing - 8-4 Testing a Claim About a Mean - Basic Skills and Concepts: 7

Answer

P is between 0.01 and 0.025.

Work Step by Step

The P-value is the interval of probabilities between which the value of the test-statistic lies in the table with degree of freedom=sample size-1=21-1=20, hence P is between 0.01 and 0.025.
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