Given the following attributes of an investment project with a 5-year life and an after-tax discount rate of 10%, calculate both the IRR and MIRR of the project: investment outlay, time 0, $4,000; after-tax cash inflows, year 1, $400; year 2, $2,000; year 3, $1,600; year 4, $2,000; and year 5, $1,200. Use the appropriate built-in functions in Excel (IRR and MIRR) to estimate both the IRR and the MIRR of the proposed investment