(a) Explanation The level of significance α is 0.01. Null hypothesis H 0 : μ = 20 Alternative hypothesis H A : μ ≠ 20 c = 1 − α c = 1 − 0.01 c = 0.99 We have, x ¯ = 22 , n = 36 , σ = 4 and from table 8-2, z c = z 0.99 = 2.58 E = z c σ n = 2 (b) To determine To find: The P -value for the hypothesis test and whether we reject or fail to reject H 0 .

Student Solutions Manual for Brase/Brase's Understanding Basic Statistics, 7th

7th Edition

ISBN: 9781305258792

Author: BRASE, Charles Henry

Publisher: Cengage Learning

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Chapter 9.2, Problem 25P

(a)

To determine

To find: The value of c and 1−α confidence interval for μ from the sample data.

(b)

To determine

To find: The P-value for the hypothesis test and whether we reject or fail to reject H0.

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Chapter 9.2, Problem 24P

Chapter 9.2, Problem 26P

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Student Solutions Manual for Brase/Brase's Understanding Basic Statistics, 7th

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The value of c and 1 − α confidence interval for μ from the sample data.

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