Regression Analysis

We are interested in studying the systolic blood pressure Y in relation to weight X1 and age X2 in a class of males approximately the same height. Data from 13 randomly selected subjects are given below.

Subject Weight X1 Age X1 Blood Pressure Y

1 152 50 120
2 183 20 141
3 171 20 124
4 165 30 126
5 158 30 117
6 161 50 129
7 149 60 123
8 158 50 125
9 170 40 132
10 153 55 123
11 164 40 132
12 190 40 155
13 185 20 147

a. Fit a multiple regression model to this data and report the prediction equation.

b. Find the predicted systolic blood pressure for the first subject. Find the residual and interpret.

c. Report R-squared and the multiple correlation and interpret.