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Is there a relationship between the raises administrators at State University receive and their performance on the job? A faculty group wants to determine whether job rating (x) is a useful linear predictor of raise (y). Consequently, the group considered the straight-line regression model, 3) = g + 51x. Using the method of least squares, the faculty group obtained the following prediction equation, 32 = 3000 + 500x. Interpret the estimated y-intercept of the line. Note: Job ratings range from 0 to 5 on a continuous scale. 0 There is no practical interpretation for this y-intercept. O For administrators who receive a rating of zero, we estimate the average raise to be $500. 0 For a 1-point increase in an administrator's rating, we estimate the administrator's raise to increase $500. 0 The base administrator raise at State University is $500. 0 For administrators who receive a rating of zero, we estimate the average raise to be $3,000