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in anxiety level for patients in the three groups. Suppose the anxiety level of a patient selected from the study had a drop of 22.5 points. From which group is the patient more likely to have come? Explain.

in anxiety level for patients in the three groups. Suppose the anxiety level of a patient selected from the study had a drop of 22.5 points. From which group is the patient more likely to have come? Explain.

MATLAB: An Introduction with Applications
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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2.112 Animal-assisted therapy for heart patients. A study was presented at the American Heart Association Conference (Nov. 2005) to gauge whether animal-assisted therapy can improve the physiological responses of heart failure pa- tients. A team of nurses from the UCLA Medical Center randomly divided 76 heart patients into three groups. Each patient in group T was visited by a human volunteer ac- companied by a trained dog, each patient in group V was visited by a volunteer only, and the patients in group C were not visited at all. The anxiety level of each patient was measured (in points) both before and after the visits. The table on p. 79 gives summary statistics for the drop in anxiety level for patients in the three groups. Suppose the anxiety level of a patient selected from the study had a drop of 22.5 points. From which group is the patient more likely to have come? Explain.
Transcribed Image Text:2.112 Animal-assisted therapy for heart patients. A study was presented at the American Heart Association Conference (Nov. 2005) to gauge whether animal-assisted therapy can improve the physiological responses of heart failure pa- tients. A team of nurses from the UCLA Medical Center randomly divided 76 heart patients into three groups. Each patient in group T was visited by a human volunteer ac- companied by a trained dog, each patient in group V was visited by a volunteer only, and the patients in group C were not visited at all. The anxiety level of each patient was measured (in points) both before and after the visits. The table on p. 79 gives summary statistics for the drop in anxiety level for patients in the three groups. Suppose the anxiety level of a patient selected from the study had a drop of 22.5 points. From which group is the patient more likely to have come? Explain.
Group T: Volunteer + trained dog Group V: Volunteer only Group C: Control group (no visit) Sample Size 26 25 25 Mean Drop Std. Dev. 10.5 3.9 1.4 7.6 7.5 7.5 Based on Cole, K., et al. "Animal assisted therapy decreases hemodynamics, plasma epinephrine and state anxiety in hospitalized heart failure patients." American Journal of Critical Care, 2007, 16: 575-585.
Transcribed Image Text:Group T: Volunteer + trained dog Group V: Volunteer only Group C: Control group (no visit) Sample Size 26 25 25 Mean Drop Std. Dev. 10.5 3.9 1.4 7.6 7.5 7.5 Based on Cole, K., et al. "Animal assisted therapy decreases hemodynamics, plasma epinephrine and state anxiety in hospitalized heart failure patients." American Journal of Critical Care, 2007, 16: 575-585.
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