please use the footnotes on each problem to accurately solve it!

1) Problem 12.7 (p. 531) The change in this problem from that in the text book is as follows: The paragraph underneath the table to be changed to: "Compute the exponentially smoothed forecast with a=0.4, and adjusted exponentially smoothed forecast with a= 0.4 and p=0.3. Compare the accuracy of the two forecasts using MAD (mean absolute deviation), and indicate which forecast appears to be most accurate. 12.7. The Intrepid mutual fund of growth stocks has had the following average monthly price for the past 10 months. MONTH FUND PRICE 627 63.9 10 70.1 Compute the exponentially smoothed forecast with a = .40, the adjusted exponentially snoothed forecast with a = 40 and = 30, and the linear trend line forecast. Compare the accuracy of the three forecasts using cumulative error and MAD. and indicate which forecast appears to be most accurate