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Probability
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True or False: If A and B are two independent events then P(A and B)=P(A).P(B).
cbse
class12
ch13
q98
p285
true-or-false
exemplar
concepts
math
sec-a
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asked
Jan 10, 2013
by
sreemathi.v
retagged
Jun 18, 2013
by
balaji.thirumalai
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Toolbox:
Two events $A$ and $B$ associated with a random experiment are independent if occurance of $A$ does not affect the occurance of $B$.
If $A$ and $B$ are independent events probability of occurance of $A$ and $B$
$p(A\cap B)=p(A)p(B/A)$ by multiplication theorem.
$p(B/A)$ is the probability of occurance of $B$
Given that $A$ has occured
But $p(B/A)=p(B) $ as $A$ and $B$ are independent.
There fore $p(A\cap B) =p(A) p(B)$
The given statement is 'True'.
answered
Jun 12, 2013
by
poojasapani_1
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