Uwa Computer Services repairs laptops, personal computers, and tablets at its store. primarily uses part-time Liwa College students as technicians. They need a good forecast of demand for repairs so that they will know how many digital parts to purchase, and how many technicians to hire. The company has summarized the demand data in the below table. Baved on the information in the following table: a. Employ the Exponential Smoothing Approach with =0.5 to forecast the demand for periods 110 b. Determine the accuracy of this method of forecast based on the value of MAD. c: Employ linear trend line (Regression) and state if it is more accurate than the exponential smoothing or not