Stella Watson, financial controller for Woodland Company, has decided to estimate the fixed and variable components associated with the company's logistics activity. She has collected the following data for the past 6 months: Packages delivered Total logistics costs 20 $2,400 40 3,300 30 2,700 24 2,700 36 3,150 50 3,750 Furthermore, she has estimated the fixed and variable components using the method of least squares. The output of a spreadsheet regression routine is as follows: Constant (intercept) R Squared 1,202.6376 0.6372 Number of observations 6. X Coefficient (s) 125.4783 Required: a. Estimate the fixed and variable components for the logistics costs using the high-low method. Using the cost formula, predict the total cost of delivery if 30 packages are delivered. b. Using the cost formula, predict the total cost of delivery if 30 packages are delivered. For the method of least squares, explain what the coefficient of determination tells us.