1. does the data satisfy the assumptions of ANOVA? 2. Write the null and alternative hypothesis of this study. 3. What is your conclusion based on the ANOVA table? Is there a significant effect of the group? 4. Use the post hoc test to determine if there are any significant differences between the groups.
1. does the data satisfy the assumptions of ANOVA? 2. Write the null and alternative hypothesis of this study. 3. What is your conclusion based on the ANOVA table? Is there a significant effect of the group? 4. Use the post hoc test to determine if there are any significant differences between the groups.
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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Question
1. does the data satisfy the assumptions of ANOVA?
2. Write the null and alternative hypothesis of this study.
3. What is your conclusion based on the ANOVA table? Is there a significant effect of the group?
4. Use the post hoc test to determine if there are any significant differences between the groups.
![In a study by Wang et al. (A-6), researchers examined bone strength. They collected 10 cadaveric
femurs from subjects in three age groups: young (19-49 years), middle-aged (50-69 years), and
elderly (70 years or older) [Note: one value was missing in the middle-aged group]. One of the
outcome measures (W) was the force in Newtons required to fracture the bone. The following table
shows the data for the three age groups.
Young (Y)
Middle-aged (MA)
Elderly (E)
193.6
125.4
59.0
137.5
126.5
87.2
84.4
115.9
98.8
122.0
78.1
145.4
94.3
51.9
117.0
99.9
57.1
105.4
83.3
54.7
99.9
72.8
78.6
74.0
83.5
53.7
74.4
96.0
112.8
Source: Data provided courtesy of Xiaodu Wang, Ph.D.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7d5a5c49-5f5b-490a-8082-f8d46454a21c%2F5c57ec07-9565-4132-9abd-7906e448aaff%2F862hbd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:In a study by Wang et al. (A-6), researchers examined bone strength. They collected 10 cadaveric
femurs from subjects in three age groups: young (19-49 years), middle-aged (50-69 years), and
elderly (70 years or older) [Note: one value was missing in the middle-aged group]. One of the
outcome measures (W) was the force in Newtons required to fracture the bone. The following table
shows the data for the three age groups.
Young (Y)
Middle-aged (MA)
Elderly (E)
193.6
125.4
59.0
137.5
126.5
87.2
84.4
115.9
98.8
122.0
78.1
145.4
94.3
51.9
117.0
99.9
57.1
105.4
83.3
54.7
99.9
72.8
78.6
74.0
83.5
53.7
74.4
96.0
112.8
Source: Data provided courtesy of Xiaodu Wang, Ph.D.
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