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Name: To examine the effects of pets and friends in stressful situations, re
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Description: 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 gro

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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=15	n₂=15	n₃=15
M₁=82.52	M₂=73.48	M₃=91.33
s₁=9.24	s₂=9.97	s₃=8.34
SS₁=1195.29	SS₂=1391.61	SS₃=973.78

SS_between = 2389.80

e) Interpret the results and include a source table.

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