A robot has just been installed at a cost of $81,000. Due to working in hazardous conditions, it will have a negative salvage value (disposal fee) of $10,000 at the end of its useful life in 10 years. It has the following estimates and probabilities for yearly savings: Savings per year $19,000 $22,000 $25,000 Probability 0.2 0.7 0.1 Part a What is the expected value of the yearly savings? Part b - Draw the cash flow diagram and set up the problem to compute the rate of return for this investment. Part c-if the MARR for the company is 15%, is this a good investment