Blood Pressure The table below lists systolic blood pressures (mm Hg) and diastolic blood pressures (mm Hg) of adult females (from Data Set 1 “Body Data” in Appendix B). For the prediction interval, use a systolic blood pressure of 120 mm Hg and use a 95% confidence level.

Systolic 126 104 130 106 158 96 156 112 122 114 102 126 Diastolic 70 66 74 64 74 52 90 70 68 74 60 68 Variation and Prediction Intervals. In Exercises 17–20, find the

(a) explained variation,

(b) unexplained variation, and

(c) indicated prediction interval. In each case, there is sufficient evidence to support a claim of a linear correlation, so it is reasonable to use the regression equation when making predictions.