i. Sketch a scatter diagram of the data and interpret the correlation coefficient.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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q5 b

b)
Dr. Alia is monitoring 7 diabetic patients in her ward. After her morning round, she
observed that her patient' blood pressure, p mmHg and their age (t) is as follows:
Patient
t
р
1
44
90
Table 5: Blood pressure of Dr. Alia's patients
2
4
74
88
130
147
3
48
120
5
42
98
6
55
80
i. Sketch a scatter diagram of the data and interpret the correlation coefficient.
7
28
101
ii. Given the estimator of the standard error of the slope (s) is 0.02 and the linear
regression equation for the data is: 63.178 +0.854x, does the patient's age affect the
blood pressure reading? Test the hypothesis using 99% confidence level.
Transcribed Image Text:b) Dr. Alia is monitoring 7 diabetic patients in her ward. After her morning round, she observed that her patient' blood pressure, p mmHg and their age (t) is as follows: Patient t р 1 44 90 Table 5: Blood pressure of Dr. Alia's patients 2 4 74 88 130 147 3 48 120 5 42 98 6 55 80 i. Sketch a scatter diagram of the data and interpret the correlation coefficient. 7 28 101 ii. Given the estimator of the standard error of the slope (s) is 0.02 and the linear regression equation for the data is: 63.178 +0.854x, does the patient's age affect the blood pressure reading? Test the hypothesis using 99% confidence level.
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