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alternative hypothesis

alternative hypothesis

ENGR.ECONOMIC ANALYSIS
ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Solve the given problem. A university counselor believes that hypnosis is more effective than the standard treatment given to the students who have high test anxiety. To test his belief, he randomly divides 22 students with high test anxiety into two groups. One of the groups receives the hypnosis treatment, and the other group receives the hypnosis treatment, and the other group receives the standard treatment. When the treatments are concluded, each student is given a test anxiety questionnaire. High scores on the questionnaire indicate high anxiety. The following are the results: Hypnosis Treatment 20 21 33 40 24 43 48 31 22 22 44 30 Standard Treatment 42 35 30 53 57 26 37 30 51 62 59 a) What is the alternative hypothesis? Assume there is sufficient basis for a directional hypothesis. b) What is the null hypothesis? c) Using the Mann-Whitney U Test and a = 0.051 tail, what do you conclude?
Transcribed Image Text:Solve the given problem. A university counselor believes that hypnosis is more effective than the standard treatment given to the students who have high test anxiety. To test his belief, he randomly divides 22 students with high test anxiety into two groups. One of the groups receives the hypnosis treatment, and the other group receives the hypnosis treatment, and the other group receives the standard treatment. When the treatments are concluded, each student is given a test anxiety questionnaire. High scores on the questionnaire indicate high anxiety. The following are the results: Hypnosis Treatment 20 21 33 40 24 43 48 31 22 22 44 30 Standard Treatment 42 35 30 53 57 26 37 30 51 62 59 a) What is the alternative hypothesis? Assume there is sufficient basis for a directional hypothesis. b) What is the null hypothesis? c) Using the Mann-Whitney U Test and a = 0.051 tail, what do you conclude?
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