To examine the effects of pets and friends in stressful situations, researchers recruited 45 people to participate in an experiment. Fifteen of the subjects were randomly assigned to each of three groups to perform a stressful task alone (control group), with a good friend present, or with their dog present. Each subjects mean heart rate during the task was recorded. Higher heart rates mean more stress. Use an alpha of .05. Control Pets Friends n1 = 20 n2 = 15 n3 = 20 M1 = 97.65 M2 = 85.4 M3 = 100.43 s1 = 9.24 s2 = 6.54 s3 = 11.81 SS1 = 1622.17 SS2 = 598.8 SS3 = 2650.05 SSBetween = 2106.92 a) What are the hypotheses for this test? b) What is the critical value? (show steps)
To examine the effects of pets and friends in stressful situations, researchers recruited 45 people to participate in an experiment. Fifteen of the subjects were randomly assigned to each of three groups to perform a stressful task alone (control group), with a good friend present, or with their dog present. Each subjects mean heart rate during the task was recorded. Higher heart rates mean more stress. Use an alpha of .05. Control Pets Friends n1 = 20 n2 = 15 n3 = 20 M1 = 97.65 M2 = 85.4 M3 = 100.43 s1 = 9.24 s2 = 6.54 s3 = 11.81 SS1 = 1622.17 SS2 = 598.8 SS3 = 2650.05 SSBetween = 2106.92 a) What are the hypotheses for this test? b) What is the critical value? (show steps)
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Question
To examine the effects of pets and friends in stressful situations, researchers recruited 45 people to participate in an experiment. Fifteen of the subjects were randomly assigned to each of three groups to perform a stressful task alone (control group), with a good friend present, or with their dog present. Each subjects mean heart rate during the task was recorded. Higher heart rates mean more stress. Use an alpha of .05. Control Pets Friends n1 = 20 n2 = 15 n3 = 20 M1 = 97.65 M2 = 85.4 M3 = 100.43 s1 = 9.24 s2 = 6.54 s3 = 11.81 SS1 = 1622.17 SS2 = 598.8 SS3 = 2650.05 SSBetween = 2106.92
a) What are the hypotheses for this test?
b) What is the critical value? (show steps)
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