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Instruction: Answer all the question in the order they are laid out on the question paper
01. Fifteen college seniors, none of whom took any math classes in college, were selected for t clinical trial. An online GRE Math Course was made available to them, and these students were allowed to study for however many hours they wanted. Then, each took the GRE for their first time. The graph below records how many hours each student studied, using the online material, and that student's GRE Quant score. The best fit line model shows the best prediction, given such a student's hours of study, of what her GRE Q score might be
For the students in this trial with the three highest, approximately what is the average number of hours they spend studying?
