Elementary Statistics (12th Edition)

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

Chapter 8 - Hypothesis Testing - 8-2 Basics of Hypothesis Testing - Basic Skills and Concepts: 34

Answer

type II error

Work Step by Step

Type I error is when we reject the null hypothesis, although it is true. Type II error is when we fail to reject the null hypothesis, although it is false. The proportion is less than 0.9, hence the null hypothesis is false, hence it is a type II error.
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