please show me how to do the work for each question. I just need the work. The answers are already given.

Data collected on the yearly registrations for a Six Sigma seminar at the Quality College are shown in the following table: Year Registrations (000) 1 4.00 2 5.00 3 5.00 4 6.00 5 9.00 6 7 8 9 10 11 9.00 6.00 11.00 11.00 16.00 12.00 a) Calculate the forecasted registrations for years 2 through 12 using exponential smoothing, with a smoothing constant (a) of 0.30 and a starting forecast of 5.00 for year 1 (round your responses to one decimal place): 1 2 4 5 6 12 Year Forecast (000) 3 4.8 8 6.8 9 8.1 7 7.1 10 9.0 5.00 4.7 49 5.2 11 11.1 6.3 11.4 b) Mean absolute deviation based on the forecast developed using the exponential smoothing method (with a smoothing constant (a) = 0.30 and a starting forecast of F, = 5.00) is 23 registrations (round your response to one decimal place)