A Well-Known Study of 22,000 Randomly Selected Male Physicians Was $\alpha = 0.01 .$

Essay

A well-known study of 22,000 randomly selected male physicians was conducted to determine if taking aspirin
daily reduces the chances of a heart attack. Half of the physicians were given a regular dose of aspirin while the
other half was given placebos. Six years later, among those who took aspirin, 104 suffered heart attacks while
among those who took placebos, 189 suffered heart attacks. Does it appear that the aspirin can reduce the
number of heart attacks among the sample group that took aspirin? Use $\alpha = 0.01 .$