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13th Edition

Anderson

Publisher: CENGAGE L

ISBN: 9781305881884

Chapter 9.7, Problem 55E

Textbook Problem

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Consider the following hypothesis test.

*H*_{0}: *μ* = 20

*H*_{a}: *μ* ≠ 20

The population standard deviation is 10. Use *α =* .05. How large a sample should be taken if the researcher is willing to accept a .05 probability of making a Type II error when the actual population mean is 22?

To determine

Find the sample size.

**Calculation:**

The given information is that

The null and alternative hypotheses are given below:

*Null hypothesis:*

*Alternative hypothesis:*

STATISTICS F/BUSINESS+ECONOMICS-TEXT

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