Please Label each part(a1-10, b1-10, c,etc) in your solution. If you plan on writing you solution please make it legible. TY in advance!

Harlen Industries has a simple forecasting model: Take the actual demand for the same month last year and divide that by the number of fractional weeks in that month. This gives the average weekly demand for that month. This weekly average is used as the weekly forecast for the same month this year. This technique was used to forecast eight weeks for this year, which are shown below along with the actual demand that occurred. The following eight weeks show the forecast (based on last year) and the demand that actually occurred: WEEK 1 FORECAST ACTUAL DEMAND DEMAND 135 132 135 128 135 150 134 180 134 180 144 170 155 185 156 205 4 5 8 7 a. Compute the MAD forecast errors. (Round your answers to 2 decimal places.) MAD Week 1 b. Using the RSFE, compute the tracking signal. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) Week 1 Tracking Signal 2 3 4 5 7 8 c. Based on your answers to parts a and b, comment on Harlen's method of forecasting. O The forecast should be considered poor. The forecast should be considered good