A corporate raider has been successful in 11 of 31 takeover attempts. Another corporate raider has been successful in 19 of 50 takeover bids. Assuming that the success rate of each raider at each trial is independent of all other attempts, and that the information presented can be regarded as based on two independent random samples of the two raiders' overall performance, can you say whether one of the raiders is more successful than the other? Explain.