Variable

Parameter estimates

St.d

T-test value

Production function

$\ln L$

1.0274

0.3984

2.5790^***

$\ln K$

0.6216

0.2342

2.6547^***

$\ln L^2$

0.0012

0.0294

0.0417

$\ln K^2$

0.1793

0.0397

4.5214^***

$\ln L\ast \ln K$

−0.1657

0.0505

−3.2832^***

$Cons\_$

−5.0832

1.5243

−3.3349^***

Efficiency function

$z_1$

−0.0096

0.0090

−1.0709

$z_2$

−0.0008

0.0002

−3.7820^***

$z_3$

0.0000

0.0000

−1.3639

$z_4$

0.0000

0.0000

0.2065

$z_5$

−0.0119

0.0039

−3.0805^***

$Cons\_$

−6.9221

2.0266

−3.4157^***

Variance

${\sigma }^2$

0.7789

0.1248

6.2389^***

Coefficient

$\gamma$

0.9068

0.0264

34.2872^***