The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 19 - From Data Production to Inference: Part III Review - Test Yourself - Page 447: 19.33

Answer

Answer: C a = .1 and not at a = .05

Work Step by Step

The p-value is the probability of obtaining a value more extreme or equal to test statistic z. We can use table A to determine this p-value. P = P(z $\leq$ -1.46) = .0721 If the P value is smaller than the significance level, the null hypothesis is rejected and the result is statistically significant.
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