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st: biprobit and restrictions on RHO

From   "Nirina F" <>
Subject   st: biprobit and restrictions on RHO
Date   Fri, 20 Jul 2007 10:11:07 -0400

Hello all,

In Greene's econometric analysis book, if you use biprobit then you
have the following:

y2=b2'x2+e2 , where y1 and y2 are  binary outcomes

Mean of e1 and e2 are zeros, and their variances are 1
but cov(e1,e2) is Rho.
I know biprobit can just run but can anyone help if I would like to
restrict rho to  a value say 0.3

Thanks in advance for your response

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