Q. 133.7( 14 Votes )

# Assume that the chances of a patient having a heart attack are 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?

Answer :

Let us assume, X denotes the events having a person heart attack

A_{1} denote events having the selected person followed the course of yoga and meditation

And, A_{2} denote the events having the person adopted the drug prescription

It is given in the question that,

P (X) = 0.40

And,

∴ Probability (The patient suffering from a heart attack and followed a course of meditation and yoga):

=

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