4. Researchers conducted a study of the effects of three drugs on the fat content of the shoulder muscles in labrador retrievers. They divided 80 dogs at random into four treatment groups. The dogs in group A were the untreated controls, while groups B, C, and D received one of three new heartworm medications in their diets. Five dogs randomly selected from each of the four groups received treatment for periods varying from 4 months to 2 years. The percentage of fat content of the shoulder muscles was determined and is given here. Treatment Group B C 2.43 1.95 3.21 Examination Time 4 months D 1.85 2.67 2.2 2.42 2.23 2.32 2.73 2.31 2.79 2.73 2.31 2.79 8 months 2.83 2.32 2.45 2.59 2.36 2.49 A 2.84 2.49 2.5 2.42 2.42 2.23 2.48
4. Researchers conducted a study of the effects of three drugs on the fat content of the shoulder muscles in labrador retrievers. They divided 80 dogs at random into four treatment groups. The dogs in group A were the untreated controls, while groups B, C, and D received one of three new heartworm medications in their diets. Five dogs randomly selected from each of the four groups received treatment for periods varying from 4 months to 2 years. The percentage of fat content of the shoulder muscles was determined and is given here. Treatment Group B C 2.43 1.95 3.21 Examination Time 4 months D 1.85 2.67 2.2 2.42 2.23 2.32 2.73 2.31 2.79 2.73 2.31 2.79 8 months 2.83 2.32 2.45 2.59 2.36 2.49 A 2.84 2.49 2.5 2.42 2.42 2.23 2.48
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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Transcribed Image Text:4. Researchers conducted a study of the effects of three drugs on the fat content of the shoulder
muscles in labrador retrievers. They divided 80 dogs at random into four treatment groups. The
dogs in group A were the untreated controls, while groups B, C, and D received one of three new
heartworm medications in their diets. Five dogs randomly selected from each of the four groups
received treatment for periods varying from 4 months to 2 years. The percentage of fat content of
the shoulder muscles was determined and is given here.
Treatment Group
A
B
C
D
Examination Time
4 months
2.84
95
3.21
2.49
1.85
2.67
2.2
2.5 2.42 2.23
2.32
2.42 2.73
2.31
2.79
2.42 2.73 2.31 2.79
8 months
2.23 2.83
2.32 2.45
2.48
2.59 2.36
2.49
2.48
2.53 2.46
2.95
2.23
2.73 2.04
2.05
2.65
2.26 2.3
2.31
I year
2.3
2.7
2.53
2.85
2.54 2.75 2.73
2.3.
2.38
2.7 2.62 2.65
2.05 2.81 2.5
2.84
2.13
2.7 2.69
2.92
2 years
2.64
3.24 2.9
2.91
2.56
3.71 3.02
2.89
2.3
2.95 3.78
3.21
3.01 2.96
2.89
2.19
2.45 3.08 2.87
2.68
a. Is there a significant difference in the mean percentages of fat content in the four treatment
groups? Use a = 0.05-=-=
b. Do any of the three treatments for heartworm appear to have increased the mean percentage
of fat content over the level in the control group
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