Question: In the following model: Y = 1 + 2X2 + 3X3 + 4X4 + ut assume that X4 is a perfect linear combination of X2.

In the following model:

Y = β1 + β2X2 + β3X3 + β4X4 + ut assume that X4 is a perfect linear combination of X2. Show that in this case it is impossible to obtain OLS estimates.

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In the following model: Y = 1 + 2X2 + 3X3 + 4X4 + ut assume that X4 is a perfect linear combination of X2. Show that in this case it is impossible to obtain OLS estimates.

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