Answer:
Cash Flow Probability Expected value
$3,840 0.4 $1,536
$5,280 0.2 $1,056
$8,110 0.3 $2,433
$10,370 0.1 $1,307
total 1 $6,332
a) the expected value of each yearly cash flow is $6,332
b) the present value of the expected cash flows = $6,332 x 3.5172 (PV annuity factor, 13%, 5 periods) = $22,270.91 ≈ $22,271
the NPV = -$24,500 + $22,271 = -$2,229
c) Debby should not buy the equipment since the project's NPV is negative.