Tyrell Garden Supply is a manufacturer of outdoor gardening equipment and storage devices. Tyrell Garden Supply’s storage shed sales for the past year is given in the table below: Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Shed Sales 10 12 13 16 19 23 26 30 28 18 16 14 a. What are the forecasts for January (next year), using a two-period and three-period moving average? b. Compute MAPE for the two- and three-period moving average models and compare your results. What is the best number of periods for the moving average model based on MAPE? c. Find the best single exponential smoothing model by evaluating the MSE from 0.1 to 0.9, in increments of 0.1.