please answer 6,7,8

QUESTION 6 See chapter 18, page 477, problem 6 . Complete the forecasts using the exponential smoothing method with 02. What is the MAD (mean absolute devation of the forecasts for January through jure? Data January February March Apri Actual Forecast 100 80 54 106 30 68 ME June 14 QUESTION 7 See chapter 18, page 479, problem 15 a What is the July forecast? fusing a weighted moving average with weghts 0,6 for most recent month. 03 for the next and 0.1 for the third most recent month) Data: Demand January 12 February 11 March 15 April 12 May 16 June 15 QUESTION 8 See chapter 18, page 479, problem 15 b. What is the July forecast using a 3 month moving average? Data: Demand 12 11 15 January February March April May June 12 16 15