1. Using the function provided, the optimal stocking quantity for Hamptonshire Express newspapers is 584 newspapers, which would result in an expected daily profit of $331.436.
2. For Anna's online newspaper profile section, the simulation showed that investing 4 hours daily would result in the highest daily profit of $371.33.
3. Marginal cost equals marginal benefit when effort is 4 hours, indicating this is the profit-maximizing level of effort for Anna.