Surgery Supplies Inc. expects sales next year to be $10,600,000 if the economy is very strong, $8,600,000 if the economy is moderately strong, $6,200,000 if the economy is steady, and $4,150,000 if the economy is weak. The company believes there is a 10 percent probability the economy will be very strong, a 20 percent probability that the economy will be relatively strong, a 30 percent probability that the economy will be steady, and a 40 percent probability of a weak economy. What is the expected level of sales for next year? Show work