Statistical Reasoning for Everyday Life Plus MyLab Statistics with Pearson eText -- 18 Week Access Card Package (5th Edition)
5th Edition
ISBN: 9780135990278
Author: Bennett, Jeffrey O., Briggs, William L., Triola, Mario F.
Publisher: PEARSON
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Textbook Question
Chapter 9.2, Problem 18E
Using Critical Values to Reject or Not Reject. In Exercises 13–20, find the value of the standard score, z, and determine whether to reject the null hypothesis at a 0.05 significance level. The critical values can be found in Tables 9.1 and 9.2. Is the alternative hypothesis supported?
18. H0: μ = 26.2 km, Ha: μ ≠ 26.2 km, n = 64,
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A researcher selects a sample and administers a treatment for anxiety to the individuals in the sample. If the sample is used for a hypothesis test, what does the null hypothesis (H0) put forth about the treatment?
Group of answer choices
The treatment has an effect on anxiety.
The treatment divides each anxiety score by a constant.
The treatment multiplies each anxiety score by a constant.
The treatment has no effect on anxiety.
P -Values. In Exercises 17–20, do the following:
a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed.
b. Find the p -value. (See Figure 8-3 on page 364.)
c. Using a significance level of α = 0.05, should we reject H0 or should we fail to reject H0?
The test statistic of z = −2.50 is obtained when testing the claim that p < 0.75.
State whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain.
(a) t= 2.242
(b) t = 0
(c) t= 2.195
(d) t= - 2.254
%3D
-2219
(a) For t 2.242, should you reject or fail to reject the null hypothesis?
O A. Reject Ho, because t>2.219.
O B. Reject Ho, because t 2.219.
O D. Fail to reject Ho, because t<2.219.
Chapter 9 Solutions
Statistical Reasoning for Everyday Life Plus MyLab Statistics with Pearson eText -- 18 Week Access Card Package (5th Edition)
Ch. 9.1 - Hypotheses and Hypothesis Tests. What is a...Ch. 9.1 - Null and Alternative Hypotheses. What is a mill...Ch. 9.1 - Hypothesis Test Outcomes. What are the two...Ch. 9.1 - P-Value. What is a P-value for a hypothesis?Ch. 9.1 - Does It Make Sense? For Exercises 512, determine...Ch. 9.1 - Does It Make Sense? For Exercises 512, determine...Ch. 9.1 - Significance. The results of my hypothesis test...Ch. 9.1 - Does It Make Sense? For Exercises 512, determine...Ch. 9.1 - Does It Make Sense? For Exercises 512, determine...Ch. 9.1 - Does It Make Sense? For Exercises 512, determine...
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