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Can you help me to solve it? Thank you. 2. Consider the simple model to estimate the effect of personal computer (PC) ownership on college

Can you help me to solve it? Thank you.

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2. Consider the simple model to estimate the effect of personal computer (PC) ownership on college grade point average (GPA) for graduating seniors at a large public university GPA = Bo + BIPC + u where PC is a binary variable indicating PC ownership (a) Explain why the OLS estimate B1 might be biased? (b) Suppose you want use an instrument variable to estimate the causal impact of PC on GPA, is parents income a good instrument, explain in details

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