Please help me answer the past hw problem by showing full work and answers:

1. (Ch. 13.1 Prob): Supgose the monthily sales for a perticuls prodect for the past 20 montrs havo boen as folows. 400 points) and a seven-poriod moving wernge (m7) to compute forocasts for months a to 20 1317 for MSD [20 poinsi] b) Use an exponortial smoothing approsch with smocthing constant an 0.2 to torocast salos for months 2 to 20 . Changs a to 0.1. Does this make the fit bettor or worso? Explain (Hint Use Eq. 13.5 for ES. Eq. 13.17 ie MSD] (10 points) c) Use an exponential smoothing with a linear trend and smoothing constants =0.4 and =0.2 to predict output for months 2 to 20 . Does this fit better or worse than your answers to (b)? Explain. (Hint: Use Eq. 13.7 and 13.8 for ES whL) The authors have used F(1)= A(1) and T(2)=A(2)A(1) as the starting points. (10 points) 1. (Ch. 13.1 Prob): Supgose the monthily sales for a perticuls prodect for the past 20 montrs havo boen as folows. 400 points) and a seven-poriod moving wernge (m7) to compute forocasts for months a to 20 1317 for MSD [20 poinsi] b) Use an exponortial smoothing approsch with smocthing constant an 0.2 to torocast salos for months 2 to 20 . Changs a to 0.1. Does this make the fit bettor or worso? Explain (Hint Use Eq. 13.5 for ES. Eq. 13.17 ie MSD] (10 points) c) Use an exponential smoothing with a linear trend and smoothing constants =0.4 and =0.2 to predict output for months 2 to 20 . Does this fit better or worse than your answers to (b)? Explain. (Hint: Use Eq. 13.7 and 13.8 for ES whL) The authors have used F(1)= A(1) and T(2)=A(2)A(1) as the starting points. (10 points)