80 engineers and 20 lawyers were interviewed, and were described with thumbnail descriptions. The following descriptions have been drawn at random from the sample of 80 engineers and 20 lawyers.
John:
John is 39 years old. He is married and has two children. He is active in local politics. The hobby that enjoys the most is rare book collecting. He is competitive, argumentative and articulate.
Q: What is the probability that John is a lawyer?
Dick:
Dick is 30 years old. He is married with no children. A man of high ability and high motivation, he promises to be quite successful in his field. He is well liked by his colleagues.
Q: What is the probability that Dick is a lawyer?
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