31. The weight and systolic blood pressure of randomly selected males in age-group 25 to 30 are shown in the following table

(a) Estimate the regression coefficients.

(b) Do the data support the claim that systolic blood pressure does not depend on an individual’s weight?

(c) If a large number of males weighing 182 pounds have their blood pressures taken, determine an interval that, with 95 percent confidence, will contain their average blood pressure.

(d) Analyze the standardized residuals.

(e) Determine the sample correlation coefficient.

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Subject Weight Systolic BP Subject Weight Systolic BP 1 165 130 11 172 153 23 2 167 133 12 159 128 180 150 13 168 132 4 155 128 14 174 149 10 567890 212 151 15 183 158 175 146 16 215 150 190 150 17 195 163 210 140 18 180 156 200 148 19 143 124 149 125 20 240 170