hand written if possible

problems no 21 only

(2) Problem no. 21(Not from textbook) 21. Two different forecasting techniques (FI and F2) were used to forecast demand for cases of bot- tled water. Actual demand and the two sets of forecasts are as follows: PREDICTED DEMAND Period Demand F1 F2 68 66 1 2 75 68 70 72 3 4 5 6 7 8 H_%m%n%%n 74 66 68 70 72 74 76 78 80 69 72 80 78 72 70 71 74 a. Compute MAD for each set of forecasts, Given your results, which forecast appears to be more accurate? Explain. b. Compute the MSE for each set of forecasts. iven your results, which forecast appears to be more accurate? c. In practice, either MAD or MSE would be employed to compute forecast errors. What factors might lead a manager to choose one rather than the other? d. Compute MAPE for each data set. Which forecast appears to be more accurate? (3) Problem 24 & 25(Not from textbook) 24. Timely Transport provides local delivery service for a number of downtown and suburban busi- nesses. Delivery charges are based on distance and weight involved for each delivery: 10 cents pe pound and 15 cents per mile. Also, there is a $10 handling fee per parcel. a. Develop an expression that summarizes delivery charges. b. Determine the delivery charge for transporting a 40-pound parcel 26 miles. 25. The manager of a seafood restaurant was asked to establish a pricing policy on lobster dinners. Experimenting with prices produced the following data: Average Number Average Number Sold per Day, y Price, X Sold per Day, y Price, 200 $6.00 155 $8.25 190 6.50 8.50 188 6.75 8.75 180 7.00 140 9.00 170 7.25 133 9.25 162 7.50 160 8.00 156 148 a. Plot the data and a regression line on the same graph. b. Determine the correlation coefficient and interpret it