Fundamentals of Statistics (5th Edition)
5th Edition
ISBN: 9780134508306
Author: Michael Sullivan III
Publisher: PEARSON
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Textbook Question
Chapter 10.2, Problem 9AYU
In Problems 7–12, test the hypothesis using (a) the classical approach and (b) the P-value approach. Be sure to verify the requirements of the test.
9. H0 : p = 0.55 versus H1 : p < 0.55
n = 150; x = 78; α = 0.1
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You conduct a two-sided hypothesis test (α = 0.05): H0: µ = 25 and HA: µ ≠ 25. You collect data from a population of size N = 100 and compute a test statistic z = - 2.5. The null hypothesis is actually false and µ = 22. Determine which of the following statements are true.
I. The two-sided p-value is 0.0124.
II. You reject the null hypothesis H0.
III. You fail to reject H0 and make a Type II error.
Group of answer choices
I only
I and II only
III only
II only
I and III only
You conduct a two-sided hypothesis test (α = 0.05): H0: µ = 25 and HA: µ ≠ 25. You collect data from a population of size N = 100 and compute a test statistic z = - 2.5. The null hypothesis is actually false and µ = 22. Determine which of the following statements are true.
I. The two-sided p-value is 0.0124.
II. You reject the null hypothesis H0.
III. You fail to reject H0 and make a Type II error.
Chapter 10 Solutions
Fundamentals of Statistics (5th Edition)
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