NPV = 115588.9. Please calculate NPV at a minimum DCFROR of 15%. Then evaluate the probability for the project to be economically satisfactory and the most likely NPV to be achieved. Hint: One may analyze the sensitivity NPV to the following parameters and then plot probability vs. NPV. Costs (+/- 40%) Incomes (+/- 30%) Salvage value (+/-20%) Environmental Cost (+/- 30%) Project life (+/- 50%) Plot a tornado diagram Rank the five uncertain parameters based on the NPV sensitivity analysis