Modelo restringido (price ~ rooms + nox): SRC_r = 1,9907e+10
F = (SRC_r - SRC)/(SRC/(n-k)) = 82,133
t de stratio en el modelo completo = -9,063 ;  t^2 = 82,133
F_c(1,502) al 5% = 3,860 ;  t_c^2 = 3,860