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These two questions are not equivalent. Q1: I looked at only one of a pair of two randomly selected children and it was a girl. What is the probability the oth
by simonh 1y ago
These two questions are not equivalent.
Q1: I looked at only one of a pair of two randomly selected children and it was a girl. What is the probability the other I didn’t see is a girl?
Q2: I looked at both of two randomly selected children and at least one of the pair of children is a girl. What is the probability the other is also a girl?
- zeroonetwothree 1y agoThere is no “the other” in the original question. Introducing that completely changes the meaning.
- in_cahoots 1y agoThe other part doesn't change anything at all. Here you go: Q1: I looked at only one of a pair of two randomly selected children and it was a girl. What is the probability there are two girls? Q2: I looked at both of two randomly selected children and at least one of the pair of children is a girl. What is the probability there are two girls?