You have been tasked with evaluating a new project that requires an initial investment of $50,000. The project is expected to generate the following cash flows over five years. Calculate the Net Present Value (NPV) of the project if the required rate of return is 10%. Additionally, determine the project's Internal Rate of Return (IRR).

Year	Cash Flow ($)
1	12,000
2	15,000
3	18,000
4	10,000
5	8,000

Requirements:

1. Calculate the NPV.
2. Determine the IRR.
3. Analyze the investment decision based on NPV and IRR.
4. Consider the sensitivity of NPV to changes in the discount rate.
5. Evaluate the project's payback period.