Answer Happy

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. ух ух 1 60 5 85 0 63 4 89 1 65 6 90 2 708 90 5 70 4 90 1 70 5 90 4 80 794 6 90 9 100 2 80 7 100 3 80 6 100 Fit a linear regression model relating blood pressure rise in millimeters of mercury (y) to sound pressure level in decibels (x) using least squares.

(a) Draw a scatter diagram of y versus x (using statistical software). Does a simple linear regression model seem reasonable in this situation? (b) Calculate the least squares estimate of the slope. Bi = (Round your answer to 3 decimal places.) (c) Calculate the least squares estimate of the intercept. Bo = i (Round your answer to 3 decimal places.) = (d) Calculate an estimate of o2. i (Round your answer to 3 decimal places.) (e) Obtain the predicted mean rise in blood pressure level associated with a sound pressure of 91 decibels. i (Round your answer to 3 decimal places.) prixo