The following are historical demand data: ACTUAL YEAR SEASON DEMAND 2011 Spring 205 Summer 142 Fall 371 Winter 580 2012 Spring 470 Summer 281 Fall 692 Winter 958 Use regression analysis on deseasonalized demand to forecast demand in summer 2013. (Do not round intermediate calculations. Round your answer to the nearest whole number.) x Answer is complete but not entirely correct. Forecast for summer 407 X