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Mathematics 20 Online
OpenStudy (anonymous):

hello

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

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

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 ?

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

OpenStudy (anonymous):

yes

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