Is it Time for Sleep Yet? Corporation (TSY, Co.) manufacturers alarm clocks. They utilize regression analysis in order to classify cost behavior. They tested the goodness of fit for four separate cost behavior equations in order to find the most accurate one. Which of the following should TSY, Co. use to accurately estimate their total costs? Is it Time for Sleep Yet? Corporation (TSY, Co.) manufacturers alarm clocks. They utilize regression analysis in order to classify cost behavior. They tested the goodness of fit for four separate cost behavior equations in order to find the most accurate one. Which of the following should TSY, Co. use to accurately estimate their total costs? y = $12x + $78,200, R-squared 0.3481694 y = $34x + $129,500, R-squared 0.9836162 y = $86x + $156,000, R-squared 0.67986315 y = $22x + $134,000, R-squared 0.7305283