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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