answer both questions with explanation

In a 5 year randomized trial by Harvard Medical School researchers, 1103? subjects were taking aspirin every other day. and 11034 subjects were taking placebo. In the treatment group, 104 subjects had heart attacks during those 5 years; in the control group - 189 subjects. Estimate how much the probability of a heart attack decreases for the aspirin group. Provide the answer with 4 decimal points. 0.0077 \\/ Correct Calculate a 95% Wald's condence interval for the decrease in probability ofa heart attack associated with taking aspirin. What is its upper bound? Round the answer to 4 decimal points. ? l ' I I No answer x Incorrect The answer you gave is not a number