Question

A doctor has decided to prescribe two new drugs to 200 heart patients in the following manner: 50 get drug
A, 50 get drug B, and 100 get both. Drug A reduces the probability of heart attack by 35%, drug B reduces it
by 20% and the two drugs when taken together, works independently. 200 patients were chosen so that
each has an 80% chance of having heart attack. if a randomly chosen patient has a heart attack, what is the
probability that the patient was given both drugs?​

Answer 1

Answer:

0.5

Step-by-step explanation:

Total number of patients, i.e., total number of outcomes =200

Total number of patients who were given both the drugs,i.e.,total number of favourable outcomes=100

If one of them has a heart attack, probability that the patent was given both the drugs is=100/200=1/2=0.5.

Hope it is help full