2. To answer this question please refer to the Excel sheet attached (Excel Sheet Chapter 6 Problem 2). You are hired by a consulting firm to provide estimates of housing starts from 2001 to 2015. You are asked to provide estimates of housing starts using a 3-year moving average; 4-year moving average and a 5-year moving average. a. Please provide the 3, 4 and 5 year moving average estimates for the years 2001 to 2015 on the attached Excel sheet. b. Which moving average provides a better forecast if the index for 2016-168? c. Which moving average provides a better forecast if the index for 2016-172? d. What do you see as the reason for the change in forecast errors using the different moving average estimates?