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emre305
for two events, M and N , P(M)=0.4 P(N I M)=0.6, And p(N I M')=0.3 Find P( M' I N) =? anyone?
You should have a formula for P(A|B)
\[P(A|B)=\frac{P( A and B)}{P(B)}\]
so how we going to apply this formula to my question?
You are ask to find P(M'|N)
Look we have: \[P(M' |N)=\frac{P(M' and N)}{P(N)} \text{ and } P(N|M')=\frac{P(N and M')}{P(M')}\] We want to find the first, so we have: \[P(M'|N)=\frac{P(M' and N)}{P(N)}=\frac{P(M')P(N|M')}{P(N)}\]