Problem 4.6 A Question Help O The monthly sales for Yazici Batteries, Inc., were as follows: Apr Month Sales Jan 20 Feb 21 Mar 17 May 13 Jun 16 Jul 16 Aug Sept 19 22 Oct 20 Nov 23 Dec 23 15 This exercise contains only parts b and c. b) The forecast for the next month (Jan) using the naive method = 23 sales (round your response to a whole number). The forecast for the next period (Jan) using a 3-month moving average approach = 22 sales (round your response to two decimal places). The forecast for the next period (Jan) using a 6-month weighted average with weights of 0.10, 0.10, 0.10,0.20, 0.20, and 0.30, where the heaviest weights are applied to the most recent month = 21.2 sales (round your response to one decimal place). sales (round your response to two decimal Using exponential smoothing with a = 0.40 and a September forecast of 21.00, the forecast for the next period (Jan) = places)