Mathematics
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OpenStudy (anonymous):
hello
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OpenStudy (anonymous):
whos there
OpenStudy (anonymous):
is anyone here
OpenStudy (anonymous):
do you have a math question just post and someone will help if they can
OpenStudy (anonymous):
cool
OpenStudy (anonymous):
find p(b/a) if A is a subset of B
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OpenStudy (anonymous):
is there numbers for b and a
OpenStudy (anonymous):
no it just says assume p(A)>0
OpenStudy (anonymous):
u there
OpenStudy (anonymous):
Yeah I am not sure about this one try closing this and reposting it make sure you word it exactly as it is stated and someone will help sorry
OpenStudy (anonymous):
cool thanks
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OpenStudy (anonymous):
it is 1
OpenStudy (anonymous):
the answer?
OpenStudy (anonymous):
What if A and B are Disjoint?
OpenStudy (anonymous):
ok i said that wrong
if A is a subset of B, the probability that B occurs given that A has occurred is 1
if you are in B, you are already in A
OpenStudy (anonymous):
for the second question, do you know what disjoint means ?
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OpenStudy (anonymous):
means they are mutually exclusiv
OpenStudy (anonymous):
e
OpenStudy (anonymous):
their intersection is empty
so \(A\cap B=\emptyset\) making \(P(A\cap B)=0\)
OpenStudy (anonymous):
and that is is the numerator of \(P(A|B)\)
OpenStudy (anonymous):
oooooooooo nice so the answer is 0
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OpenStudy (anonymous):
yes