A A B Amount Probability Amount Probability Initial $5,000 $5,000 Payment Annual Rate of Return Pessimistic 20% 25 15% .20 Most Likely 25% 50 25% .55 Optimistic 30% .25 35% .25 a) Determine the expected value of return for each 3-D Printer b) Determine the variance for each 3-D Printer c) Determine the standard deviation for each 3-D Printer d) Explain your answer in detail