Which of the following statements is correct? one defect of the irr method is that it does not take account of cash flows over a project's full life one defect of the irr method is that it does not take account of the time value of money one defect of the irr method is that it does not take account of the cost of capital. one defect of the irr method is that it values a dollar received today the same as a dollar that will not be received until sometime in the future one defect of the irr method is that it assumes that the cash flows to be received from a project can be reinvested at the irr itself, and that assumption is often not valid.

Aproduction line has three machines a, b, and c, with reliabilities of .96, .86, and .85, respectively. the machines are arranged so that if one breaks down, the others must shut down. engineers are weighing two alternative designs for increasing the line’s reliability. plan 1 involves adding an identical backup line, and plan 2 involves providing a backup for each machine. in either case, three machines (a, b, and c) would be used with reliabilities equal to the original three. a. compute overall system reliability under plan 1. (round your intermediate calculations and final answer to 4 decimal places.) reliability b. compute overall system reliability under plan 2. (round your intermediate calculations and final answer to 4 decimal places.) reliability c. which plan will provide the higher reliability? plan2plan1