1. 5.29 In 1986, an article appeared on the front page of the New York Times about the results of a research project on the effect of a light dose of aspirin on the incidence of heart attacks. By means of a carefully selected randomization method, a group of 22,000 healthy middle-aged males was randomly sorted into two groups of the same size: an aspirin group and a placebo group. In the aspirin group, 104 heart attacks occurred, while 209 heart attacks occurred in the placebo group. How can you argue, on the grounds of these results, that it is beyond a reasonable doubt that aspirin contributes to the prevention of heart attacks?