A ski repair shop at a resort in Colorado sells replacement poles each seoson. The shop needs to develop a forecost of next season's sales so that they can place an order for poles with their supplier well in advance of the beginning of the season. Sales dato for the past five years are shown below. Compare the forecasts given by the following models. Brpictureclick here for the Excel Data File a. Develop forecast using a five-year moving average. (Round your answer to 1 decimal place.) b. Develop forecast using a weighted moving overage model with weights of 01,0.4,0.1,0.2, and 0.2 for years 1 through 5 respectively. (Round your answer to 1 decimal place.) c. Develop forecast using an exponential smoothing model with year 1 forecost of 370 and =0,3. (Do not round intermediate calculations. Round your answer to 2 decimal places.)