Final answer:
To select the machine based on PW analysis, we need specific alternatives, their costs, and benefits. The PW analysis compares present values of costs and benefits using the MARR to determine the best alternative.
Step-by-step explanation:
The student is asking which machine should be selected based on the Present Worth (PW) analysis, given a Minimum Attractive Rate of Return (MARR) of 10%. To answer this question, we need the specific alternatives and their associated costs and benefits.
The PW analysis compares the present value of future costs and benefits of each alternative over the project's life cycle. The alternative with the highest positive PW value should be selected. To calculate the PW, we need to discount the future costs and benefits using the discount rate (MARR) and consider the time value of money.
Without the specific alternatives and their associated costs and benefits, it is not possible to provide a definite answer to Question 4.