You are asked to evaluate the following two projects for the Norton corporation. Use a discount rate of 12 percent. Use Appendix 8 for. an approximate answer but calculate your final answer using the formula and financial calculator methods. a. Calculate the profitability index for project X. (Do not round intermediate calculations and round your answer to 2 decimal places.) b. Calculate the profitability index for project Y, (Do not round intermediate calculations and round your answer to 2 decimal places.)