Researchers wish to test whether or not taking aspirin is effective at preventing future heart attacks. They selected 2,000 participants to take part in the study; participants were randomized to take either a placebo pill or 81 mg of aspirin daily. Participants were then followed for one year to see whether or not they suffered a heart attack. The data can be summarized as follows: Aspirin and Heart Attacks Heart attack- yes Heart attack- no Total Aspirin 75 675 750 Placebo 235 1015 1250 Total 310 1690 2000 What would be the best statistical test for them to utilize