7) Craigco is trying to find a cost equation for their monthly costs. Total costs and units produced are provided for the last 8 months are provided below. Month 1 2 3 Units Produced Total Cost 2,131 $ 2,160 $ 2,117 $ 2,180 $ 2,102 $ 2,196 $ 2,128 $ 4 33,085.00 33,103.00 33,070.00 33,137.00 33,013.00 33,167.00 33,054.00 5 6 7 00 2,191 $ 33,140.00 a) Use regression analysis on your BA II Plus calculator to find the fixed portion of total costs b) Use regression analysis to find the variable portion of total costs c) Create the cost equation fr Craigco (using regression analysis) d) What is the r squared of this set of data? is the formula a good fit? Why or why not? e) Calculate expected total costs if Craigco produces 2,150 units f) Use the high-low method to find fixed costs, variable costs and create the cost equation for total costs g) Calculate expected total costs if Craigco produces 2,150 units h) Explain the difference between your answers in e and g, and explain which number is better to use for forecasting costs and why