5. To examine the effects of pets and friends in stressful situations, researchers recruited 40 people to participate in an experiment. Subjects were randomly assigned to one 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 n₁ = 12 M₁ = 85.7 $1 = 3.4 SS = 127.16 SSBetween 263.01 Pets n2 = 14 M₂ = 83.2 S2 = 2.5 SS=81.25 Friends n3 = 14 M3 = 89.3 S3 = 3.5 SS= 159.25 a) What are the hypotheses for this test? b) What is the critical value? c) Complete the necessary calculations (include post hocs if necessary).
5. To examine the effects of pets and friends in stressful situations, researchers recruited 40 people to participate in an experiment. Subjects were randomly assigned to one 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 n₁ = 12 M₁ = 85.7 $1 = 3.4 SS = 127.16 SSBetween 263.01 Pets n2 = 14 M₂ = 83.2 S2 = 2.5 SS=81.25 Friends n3 = 14 M3 = 89.3 S3 = 3.5 SS= 159.25 a) What are the hypotheses for this test? b) What is the critical value? c) Complete the necessary calculations (include post hocs if necessary).
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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