(1 point) Echocardiograms were performed on 10 male participants in the National Institute on Aging's volunteer Longitudinal Study Program. All subjects (25-84 years of age) were physically active and had no evidence of hypertension or cardiovascular disease. Measurements were made of the thickness of the posterior left ventricular wall gathered. (systolic LV thickness). This thickness was compared to the age of the patients to see if there was a relationship between aging and wall thickness. The following data set was Systolic LV Wall Thickness vs Age Age [years] LV wall thickness [mm/m^2] 26 7.11 40 8.86 43 9.59 44 10.01 46 10.11 59 11.6 63 12.52 64 12.65 70 13.89 75 14.51 . Find the correlation coefficient, r. b. Find the coefficient of determination, CD. CD = = (Give the answer to 4 significant digits.) What does this tell us? c. Find the best fitting linear relationship between the LV wall thickness and age. (Give values to 4 significant digits) y = * + d. Why do we need to calculate r as well as a best fit line in determining if a linear relationship exists? e. Use the linear relationship to find the predicted LV thickness along with the associated 95% confidence/prediction interval for the LV thickness given a male of age 7 years. ypredicted (73) = The prediction interval is ( f. Should we use this relationship to predict the LV thickness for a male of age 10? Why or why not