46. Two investment alternatives are being considered. Alternative A requires an initial investment of $15,000 in equipment; annual operating and maintenance costs are anticipated to be normally distributed, with a mean of $5,000 and a standard deviation of $500; the terminal salvage value at the end of the 8-year planning horizon is anticipated to be normally distributed, with a mean of $2,000 and a standard deviation of $800. Alternative B requires end-ofyear annual expenditures over the planning horizon. The annual expenditure will be normally distributed, with a mean of $8,000 and a standard deviation of $750. Using a MARR of 15%, what is the probability that Alternative A is the most economic alternative?