In the Atlanta area, the number of daily calls for the repair of Xerox copy machines has been recorded as follows: Day of month Calls (count) 1 92 2 127 3 106 4 165 5 125 6 111 7 178 8 97 Using Excel, perform the following calculations: Prepare a three-period moving-average forecast for the data. What is the error on each day? Prepare a three-period weighted-moving-average forecast using weights of w1=0.5, w2=0.3, w3=0.2 Which of the two forecasts is better? Then, Using the data prepare exponentially smoothed forecasts for the following cases: alpha = 0.1 and F1 = 90 alpha = 0.3 and F1 = 90