
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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HELP ASAP. info is given in the pic.
8) At which value for alpha (type I) error is the ANOVA model statistically significant?
A) 0.05
B) 0.025
C) 0.01
D) 0.005
E All of the above
9) When using Fisher's LSD test with a = 0.05 to compare age categories, what is the LSD
value when comparing the Under 20 group to the 20 to 29 group?
A) 9.283
B) -0.376
C) 2.120
D) 11.272
E) -2.0
10) Treating the Age factor as a random effect, use the components of variance model to
estimate the variance in systolic blood pressure (Y).
A) 8.42
B) 33.69
C) 70.67
D) 104.37
E) 239.13

Transcribed Image Text:Use the following information when answering questions 8) -> 10) below.
A doctor is studying the relationship between
Systolic blood pressure (Y) and age (X). The
doctor takes the blood pressures of 5 randomly-
selected HMO patients within each of 4 age
classifications. The data appear in the table to
the right (Patient Age worksheet).
To assess the relationship
between blood pressure and
age, the doctor fits a one-way
ANOVA model and obtains
the excel output to the right.
SUMMARY
Groups
Under 20
20 to 29
30 to 49
50 and Over
ANOVA
Source of Variation
Between Groups
Within Groups
Total
Under 20
105
113
108
114
123
Count
5
5
5
5
SS
717.4
1130.8
1848.2001
Sum
df
20 to 29
110
101
112
127
123
563
573
613
637
Patient Age Group
30 to 49
122
114
128
19
Average
112.6
114.6
122.6
127.4
124
125
Variance
47.3
109.3
27.8
98.3
50 and Over
139
115
136
124
123
MS
F
P-value
3 239.1333 3.383563 0.044187
16
70.675
F crit
3.238872
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