| Estimate Std. | Error | t value | Pr(>|t|) |
(Intercept) | 30.243277 | 1.271720 | 23.781 | <2e−16 |
disp | −0.004566 | 0.006239 | −0.732 | 0.465 |
hp | −0.056568 | 0.012342 | −4.583 | 6.18e−06 |
poly(weight, 2)1 | −82.405941 | 11.391152 | −7.234 | 2.53e−12 |
poly(weight, 2)2 | 27.526552 | 4.095624 | 6.721 | 6.48e−11 |