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#1




worried about probability question!!
hey friends i have problem....
the question which asking if patient survive for two year then what is the probability that patient will survive 4 years.....some are saying multiply all four yer probability..some are saying multiply only 3rd and fourth year probability...can anyone explain basic fundamental to give answer of such type of questions... THANKS A LOT IN ADVANCE..PLEASE GUYS HELP ME... 
#2




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The probability that event B occurs, given that event A has already occurred is P(BA) = P(A and B) / P(A) 
The above post was thanked by:  
dr.digant (08102011) 
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#8




hey bebix i have sent u another private message...if u knw the answer please explain me..thanks a lot!!!
and thanks for nice explaination of previous question too 
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#10




hey bebix please reply the another question which i have sent u in private message...THANKS

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BiostatisticsEpidemiology 
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