(Answered) Question a drug trial performed with seriously ill patients

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Question: A drug trial performed with seriously ill patients produces the following data:

Adult Men Adult Women Boys Girls

Survived at least two years 257 320 104 152

Survived les than one year 619 471 51 38

(a) If a patient is selected randomly from this pool, what is the probability of choosing an adult male, if we are told that the person survived at least two more years?

(b) What is the probability of choosing a girl if we are told that the person survived less than one year?

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