(Solution) An article in the Journal of Sound and Vibration (Vol. 151, 1991, pp. 383-394) described a study investigating the relationship between noise... > Snapessays.com


(Solution) An article in the Journal of Sound and Vibration (Vol. 151, 1991, pp. 383-394) described a study investigating the relationship between noise...


9. An article in the Journal of Sound and Vibration

 

(Vol. 151, 1991, pp. 383–394) described a study investigating

 

the relationship between noise exposure and hypertension.

 

The following data are representative of those reported in the

 

article.

 

y 1 0 1 2 5 1 4 6 2 3

 

x 60 63 65 70 70 70 80 90 80 80

 

y 5 4 6 8 4 5 7 9 7 6

 

x 85 89 90 90 90 90 94 100 100 100

 

(a) Draw a scatter diagram of y (blood pressure rise in

 

millimeters of mercury) versus x (sound pressure level in

 

decibels). Does a simple linear regression model seem

 

reasonable in this situation?

 

(b) Fit the simple linear regression model using least squares.

 

Find an estimate of 2.

 

(c) Find the predicted mean rise in blood pressure level associated

 

with a sound pressure level of 85 decibals.

 

(d) Test for the slope of the regression line.

 

(e) Find Coefficient of correlation.

 


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This question was answered on: Sep 21, 2023

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