Question: 1. Question 12. A daughter-son problem (2.9, 6.1) You are told that a family, completely unknown to you, has two children and that one of

1. Question 12. A daughter-son problem (§2.9, §6.1)

You are told that a family, completely unknown to you, has two children and that one of these children is a daughter. Is the chance of the other child also being a daughter equal to 1 2 or 1 3 ? Are the chances altered if, aware of the fact that the family has two children only, you ring their doorbell and a daughter opens the door?

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