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Question: 5 you want to estimate the effect of hours spent...

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5. You want to estimate the effect of hours spent in an SAT preparation course on total SAT score. You draw a random sample of high school seniors in at the end of the school year (after they have taken the SAT) from Boston area schools and ask them how many hours they spent in an SAT prep course and what SAT score they received. You set out to estimate the following regression: (a) (5 points) In equation 3, what is the expected sign of A if the course is effective? (b) (5 points) What is the interpretation of Bo? (c) (5 points) Given this is a random sample of students, some of whom voluntarily chose to take an SAT prep course, is B1 the causal effect of hours in a prep course on the SAT score? If not, is it too big or too small? Explain

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