A. An article in the Journal of Sound and Vibration describeda study investigating the relationship between noise exposure and hypertension. The data given in the table are representative of those reported in the article. Blood ID Noise Pressure Blood ID Noise Pressure Pressure (decibels) Pressure (decibels) 65 11 4 83 1 12 4 90 63 2 65 13 7 90 3 3 71 14 8. 88 4 2. 15 4 88 4 75 81 16 95 1 80 17 8. 96 7 3 96 18 9. 92 8 85 19 7 100 9 1 80 20 6. 100 10 3. Solution: 1. Documentation: Excel output just like in PT 1 and 2. 2. Do these data provide sufficient evidence that there is a positive linear relationship between the two variables? 3. What does R^2 imply?
A. An article in the Journal of Sound and Vibration describeda study investigating the relationship between noise exposure and hypertension. The data given in the table are representative of those reported in the article. Blood ID Noise Pressure Blood ID Noise Pressure Pressure (decibels) Pressure (decibels) 65 11 4 83 1 12 4 90 63 2 65 13 7 90 3 3 71 14 8. 88 4 2. 15 4 88 4 75 81 16 95 1 80 17 8. 96 7 3 96 18 9. 92 8 85 19 7 100 9 1 80 20 6. 100 10 3. Solution: 1. Documentation: Excel output just like in PT 1 and 2. 2. Do these data provide sufficient evidence that there is a positive linear relationship between the two variables? 3. What does R^2 imply?
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Transcribed Image Text:A. An article in the Journal of Sound and Vibration described a study investigating the relationship
between noise exposure and hypertension. The data given in the table are representative of those
reported in the article.
Blood
ID
Noise Pressure
Blood
ID
Noise Pressure
(decibels)
Pressure
(decibels)
Pressure
65
11
4
83
1
63
12
4
90
2
65
13
7
90
3
3
71
14
8.
88
4
2.
75
15
4
88
4
81
16
95
1
80
17
8.
96
3
96
18
9.
92
8
5
85
19
7
100
1
80
20
6.
100
10
3
Solution:
1. Documentation: Excel output just like in PT 1 and 2.
2. Do these data provide sufficient evidence that there is a positive linear relationship between
the two variables?
3. What does R^2 imply?
Transcribed Image Text:Using the regression model, predict the blood pressure level associated with a sound pressure
of 7.5 decibels
5. Fill out the table below
Regression
Value
P-value
parameters
bo
b1
Legend:
R^2
Highly
significant
significant
Not significant
*3
ns
BRIEF DESCRIPTION:
B. The followíng data provides the grades of 10 randomly selected engineering students on their
Statistics Class, and a course on Operations Research. Are the two variables, Statistics
Performance and Operations Research Performance significantly correlated?
Statistics Grade
ID
Operations Research
ID
Statistics Grade
Operations Research
88
81
6.
93
95
2
78
82
7.
83
80
73
75
8.
86
83
4
75
84
9
85
65
90
92
10
66
74
Solution:
1. Documentation: Excel output just like in PT 1 and 2.
2. Fill up the table below.
Pearson's r
DE
P-value
Legend:
Highly
significant
significant
Not significant
**
ns
BRIEF DESCRIPTION:
C. What generalization can you draw from the activity? 2- 4 sentences only.
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