End-of-Training Proficiency Method 14 94 Traditional 19 96 Traditional 17 98 Traditional 38 100 Traditional 40 102 Traditional 26 105 Traditional 41

The director of a training program for a large insurance company wants to determine which training method is best for training underwriters. The three methods to be evaluated are traditional, CD-ROM based, and Web based. Before the start of the training, each trainee is given a proficiency exam that measures mathematics and computer skills. At the end of the training, all students take the same end-of-training exam. The results are organized and stored in Underwriting.xlsx. a. Develop a multiple regression model to predict the score on the end-of-training exam, based on the score on the proficiency exam and the method of training used. State the equation of the model and what each variable represents.