This is complete question do not miss everything. Help me finish question a to f.

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It's been well reported that taking an aspirin a day keeps heart attacks away. This idea is from an experiment conducted in 1988 by the Physicians' Health Study Research Group at Harvard Medical School. Each doctor was randomly assigned to take either an aspirin or a placebo, and don't know which type of pill they are taking (called blinding). The results are shown in the table below. Yes No Total Placebo 189 11034 Aspirin 104 11037 Total 293 21778 22074 a) What type of study design did they use? What probabilities/proportions can you calculate based on the study design? b) Find the sample proportions of having any type of heart attack for the doctors taking a placebo and the doctors taking an aspirin (leA and pHIP). c) Estimate the relative risk of a heart attack for doctors taking a placebo vs taking aspirin