cost of capital of 9%. a. Calculate the payback period for the proposed investment. b. Caiculate the dlscounted payback period for the proposed lnvestment. c. Calculate the net present value (NPV) for the proposed investment. d. Calculate the probabiity index for the proposed investment. e. Calculate the internal rate of return (IRR) for the proposed investment. f. Calculate the modified intemal rate of retun (MIRR) for the proposed investment. g. Evaluate the acceptability of the proposed investment using NPV, IRR, and MIRR. a. The payback period of the proposed investment is years. (Round to two decimal places.) Data table (Click on the icon here 1 in order to copy the contents of the data table below into a spreadsheet.)