The data in the following table show five students' reading test scores and final exam grades in a history class. Reading Test Score, x History Final Exam Grade, y y = 8.5 9.4 10.0 11.4 12.0 66 68 78 89 92 (a) Use the points (8.5, 66) and (10.0, 78) to find a linear model that will predict a student's final exam grade, y, given his or her reading test score, x. (b) Use your linear model to estimate a student's final exam grade in the history class given that the student's reading test score was 11.5.

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