Elementary Statistics (12th Edition)

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

Chapter 8 - Hypothesis Testing - 8-3 Testing a Claim About a Proportion - Basic Skills and Concepts: 4

Answer

a) p=0.5, P=0.00000000055 b)If P is very low and hence close to 0, we reject the null hypothesis. c) It suggests that we hould accep the null hypothesis.

Work Step by Step

a) p is the extended porportion, which here is 0.5. P is the probability of the null hypothesis being true based on the sample proportion, hence here it is 0.00000000055. b) If P is very low and hence close to 0, we reject the null hypothesis. c) The memory trick can be misleading, because P is close to 1 and hence suggests that we should accept the null hypothesis, however we never accept it but only reject it or fail to reject it.
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