uest 5 (2 points) Consider your work on Problem 4.6 (the FIT problem). In this problem the FIT forecast for period 8 is: 25.498 23.763 28.773 2.175 4.6 follows: The monthly sales for Yazici Batteries, Inc., were as SALES 20 21 15 14 13 MONTH January February March April May June July August September October November December 16 17 18 20 20 21 23 a) Plot the monthly sales data. b) Forecast January sales using each of the following: i) Naive method. ii) A 3-month moving average. iii) A 6-month weighted average using .1, 1, 1, 2, 2, and .3, with the heaviest weights applied to the most recent months. iv) Exponential smoothing using an a = .3 and a September forecast of 18. v) A trend projection. c) With the data given, which method would allow you to fore- cast next March's sales? PX