Function Estimate Std-Error Function Estimate Std-Error
f1(age) -0.7643 0.1275 f1(age)*girl 0.5111 0.1756
f2(age) -1.2067 0.1093 f2(age)*girlgirl -0.1676 0.1544
f3(age) -3.1533 0.1417 f3 (age)*girl -0.4388 0.2000
f4(age) -4.1287   0.1796 f4 (age)*girl -0.3573 0.2503
f5(age) -4.9552   0.2077 f5 (age)*girl -0.6107 0.2878
f6(age) -4.8680 0.2558 f6 (age)*girl -0.1322 0.3534
Table 2: Estimates of fixed effects and their standard errors.