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Sample Problem An article in the Journal of Soundand Vibration (1991, Vol. 151, pp. 383-394) described a study investigating the relationship between noise exposure and hypertension. The following data are 5 representative of those reported in the article.x represents the sound pressure level in decibels andy represents the blood pressure rise in milli meters of mercury a. Drawa scatter diagram of y (blood pressure rise in milli meters of mercury) versusx (sound pressure level in decibels). b. Fit the simple linear regression model using least squares. c. Find an estimate of the variance o 2 d. Find the predicted mean rise in blood pressure level associatedwith a sound pressure level of 85 decibels e. Calculate the coefficient of determination for this model and provide an interpretation. 60 63 65 70 70 70| 80 90 80 80 y 1 5 1 4 6. 85 89 90 90 90 90 94 | 100 100 100 y 4 6. 8 4 9. 7 6.

Sample Problem An article in the Journal of Soundand Vibration (1991, Vol. 151, pp. 383-394) described a study investigating the relationship between noise exposure and hypertension. The following data are 5 representative of those reported in the article.x represents the sound pressure level in decibels andy represents the blood pressure rise in milli meters of mercury a. Drawa scatter diagram of y (blood pressure rise in milli meters of mercury) versusx (sound pressure level in decibels). b. Fit the simple linear regression model using least squares. c. Find an estimate of the variance o 2 d. Find the predicted mean rise in blood pressure level associatedwith a sound pressure level of 85 decibels e. Calculate the coefficient of determination for this model and provide an interpretation. 60 63 65 70 70 70| 80 90 80 80 y 1 5 1 4 6. 85 89 90 90 90 90 94 | 100 100 100 y 4 6. 8 4 9. 7 6.

MATLAB: An Introduction with Applications
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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Sample Problem An article in the Journal of Soundand Vibration (1991, Vol. 151, pp. 383-394) described a study investigating the relationshipbetween noise exposure and hypertension. The following data are 5 representative of those reported in the article.x represents the sound pressure level in decibels andy represents the blood pressure rise in milli meters of mercury a. Drawa scatter diagram of y (blood pressure rise in milli meters of mercury) versusx (sound pressure level in decibels). b. Fit the simple linear regression model using least squares. c. Find an estimate of the variance o 2 d. Find the predicted mean rise in blood pressure levelassociated with a sound pressure level of 85 decibels e. Calculate the coefficient of determination for this modeland provide an interpretation. 60 63 65 70 | 70 | 70| 80 90 80 | 80 y 1 1 5 1 4 6. 85 89 | 90 90 90 90 | 94 | 100 100 100 y 4 6. 8 4 9. 7 6.
Transcribed Image Text:Sample Problem An article in the Journal of Soundand Vibration (1991, Vol. 151, pp. 383-394) described a study investigating the relationshipbetween noise exposure and hypertension. The following data are 5 representative of those reported in the article.x represents the sound pressure level in decibels andy represents the blood pressure rise in milli meters of mercury a. Drawa scatter diagram of y (blood pressure rise in milli meters of mercury) versusx (sound pressure level in decibels). b. Fit the simple linear regression model using least squares. c. Find an estimate of the variance o 2 d. Find the predicted mean rise in blood pressure levelassociated with a sound pressure level of 85 decibels e. Calculate the coefficient of determination for this modeland provide an interpretation. 60 63 65 70 | 70 | 70| 80 90 80 | 80 y 1 1 5 1 4 6. 85 89 | 90 90 90 90 | 94 | 100 100 100 y 4 6. 8 4 9. 7 6.
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