a retailer is deciding how many units of a certain product to stock. the historical probability distribution of sales for this product is 0 units, 0.2; 1 unit, 0.3; 2 units, 0.4, and 3 units, 0.1. the product costs $8 per unit and sells for $33 per unit. what is the largest conditional value (profit) in the entire payoff table for this scenario?