abc auto insuraance classifies drivers as good, medium, or poor risks. Drivers who apply fall under these three groups in proportations: 30 percent, 50 percent and 20. The probability of a good driver having a accident is .01, probability of a medium driver having a accident is .03 and the probability of a poor driver having a accident is .10. The company sells Mr. Brophy an insurance policy and he has an accident. What's the probability of Mr. Brophy being a good, medium or poor driver?