2) Sam is a grade obsessive WTCC senior. He is about to graduate from WTCC and is thinking of attending Duke to get a degree in Business. Sam gathered the following data to see if there is a linear correlation between WTCC GPAs and Duke GPAs. Help Sam out by analyzing the data as follows: WTCC GPA 2.5 3.3 2.1 3.8 2.6 2.2 2.8 2.7 3.2 3.3 Duke GPA 2.8 3.1 2.2 3.7 2.8 2.5 3.0 3.0 3.1 3.2 a) Identify the predictor (independent) variable and the response (dependent) variable. b) Create a scatterplot in Excel. c) Do you think there is a linear correlation? What kind? d) Determine and interpret the linear correlation coefficient r . e) Determine the least squares regression equation. f) Determine the coefficient of determination r2. g) Determine the best predicted Duke GPA if Sam's WTCC GPA is 3.4