Fitting a straight line to a set of data yields the following prediction line. Complete (a) through (c) below. = 4+2X a. Interpret the meaning of the Y-intercept, bo. Choose the correct answer below. A. The Y-intercept, bo = 4, implies that when the value of X is 0, the mean value of Y is 4. B. The Y-intercept, bo = 4, implies that the average value of Y is 4. C. The Y-intercept, b = 2, implies that when the value of X is 0, the mean value of Y is 2. OD. The Y-intercept, b = 4, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 4 units. b. Interpret the meaning of the slope, b. Choose the correct answer below. OA. The slope, b = 2, implies that for each increase of 1 unit in X, the value of Y is expected to decrease by 2 units. OB. The slope, b = 2, implies that the average value of Y is 2. C. The slope, b = 4, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 4 units. D. The slope, b = 2, implies that for each increase of I unit in X, the value of Y is expected to increase by 2 units. c. Predict the mean value of Y for X = 3. (Simplify your answer.)