The following table shows the weight and total cholesterol and triglyceride levels in 15 patients with primary type II hyperlipoproteinemia just prior to initiation of treatment:

Y Weight (kg)
X1 Total Cholesterol (mg/100 ml)
X2 Triglyceride (mg/100 ml)
76 302 139 97 336 101 83 220 57 52 300 56 70 382 113 67 379 42 75 331 84 78 332 186 70 426 164 99 399 205 75 279 230 78 332 186 70 410 160 77 389 153 76 302 139 Compute the multiple correlation coefficient and test for significance at the .05 level.