Reference no: EM131028502
(This is a hypothetical; SAT stands for Scholastic Achievement Test, widely used for college admissions in the US.) Dr. Sally Smith is doing a study on coaching for the Math SAT. She assumes the response schedule
Yi,x = 450 + 3x + δi . In this equation, Yi,x is the score that subject I would get on the Math SAT with x hours of coaching. The error term δi is normal, with mean 0 and standard deviation 100.
(a) If subject #77 gets 10 hours of coaching, what does Dr. Smith expect for this subject's Math SAT score?
(b) If subject #77 gets 20 hours of coaching, what does Dr. Smith expect for this subject's Math SAT score?
(c) If subject #99 gets 10 hours of coaching, what does Dr. Smith expect for this subject's Math SAT score?
(d) If subject #99 gets 20 hours of coaching, what does Dr. Smith expect for this subject's Math SAT score?
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: (a) Does she need to do an experiment, or can she get by with observational study? (The latter would be much easier to do.) (b) If she can use observational data, what else would she have to assume, beyond the response schedule? (c) And, howwould she..
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: (a) If subject #77 gets 10 hours of coaching, what does Dr. Smith expect for this subject's Math SAT score? (b) If subject #77 gets 20 hours of coaching, what does Dr. Smith expect for this subject's Math SAT score? (c) If subject #99 gets 10 hours o..
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