13chances of a patient having a heart attack after meditation and yoga is (40-10)%=30%
chances of a patient having a heart attack after prescription of certain drug is (40-12)%=28%
req probab....=(1/2*3/10)/(1/2*3/10 + 1/2*7/25)=15/29
Assume that the chances of a patient having a heart attack is 40%. It is also assumed that a meditation and yoga course reduce the risk of heart attack by 30% and prescription of certain drug reduces its chances by 25%. At a time a patient can choose any one of the two options with equal probabilities. It is given that after going through one of the two options the patient selected at random suffers a heart attack. Find the probability that the patient followed a course of meditation and yoga?
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