You have been told that a family has two children and one of these is a daughter. What is the probability that the other child is also a daughter?
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2 marksStatisticsProbability and Bayes' theoremConditional probability and the multiplication ruleModerateabout 3 min
DSE 2009 Question 38: Probability and Bayes' theorem
Answer and worked solution
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You have been told that a family has two children and one of these is a daughter. What is the probability that the other child is also a daughter? (A) 1/2 (B) 1/3 (C) 1/4 (D) 3/4
Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
What this question tests
This question is on Conditional probability and the multiplication rule, part of Probability and Bayes' theorem in Statistics.
Probabilities that change when you know something has happened.
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Question from the DSE 2009 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.