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PROBABILITY — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsPROBABILITY1 Mark
Question
Define conditional probability.
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Answer

$U$ is a finite sample space and $A$ and $B$ are any two events of $U.$ The probability of event $B,$ under the condition that event $A$ is happened, is called conditional probability of the event $B.$

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