Solve the regression equation

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Consider the regression equation

y= β1 + β2x2i + β3x3i + β4x4i + β5x5i + ei

where x2i and x4i are endogenous and x3i and x5i are exogenous.

If there exist a single valid instruments zli. then the model is Select one:

a. overidentified
b. underidentified
c. exactly identified

Reference no: EM13499725

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