3. Find the optimal level of safety (probability of an accident) from a societal perspective using the data on the costs of safety given in the table below. Assume that an accident im- poses costs on a victim equal to $500,000. Probability Safety of Loss Expenditures 0.030 $ 0 0.020 1,000 0.015 2,000 0.012 3,000 0.0095 4,000 0.009 5,000