  Term Contrast Estimate Std. Error      z   Pr(>|z|)   2.5 %   97.5 % p (Inf)    p (Sup)  p (Eq)
1   hp       +1   -0.112    0.01255 -8.924 < 2.22e-16 -0.1366 -0.08742 0.83087 < 2.22e-16 0.83087
2 qsec       +1   -1.382    0.43305 -3.192  0.0014127 -2.2311 -0.53356 0.99847 0.00070633 0.99847

Model type:  lm 
Prediction type:  response 
