Hello everyone,
I am trying to estimate the parameter b.
I have Y and X1 which I know and they are both random. However, I also have
X2 which I don't know and is also random. I want to estimat b from the
model:

Y = b*X1  + ( 1 - b ) * X2

Can anyone offer some suggestions. The values of Y and X1 are both pvalues
so they are constrained in (0,1).

-- 
Thanks,
Jim.

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