. margins, at (educ=16 exper=10) at(educ=12 exper=10)
Predictive margins Number of obs = 1000
Model VCE : Robust
Expression : Linear prediction, predict()
1._at : educ = 16
exper = 10
2._at : educ = 12
exper = 10
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| Delta-method
| Margin Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
_at |
1 | 2.960403 .0275281 107.54 0.000 2.906448 3.014357
2 | 2.59918 .0296965 87.52 0.000 2.540976 2.657384
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想问一下,如果要检验结果1比结果2大的test或者lincom命令应该怎么写?