SOLUTION: Parcels from sender S to receiver R pass sequentially through two post offices. Each post office has a probability 1/5 of losing an incoming parcel, independently of all other par

Question 871514: Parcels from sender S to receiver R pass sequentially through two post
offices. Each post office has a probability 1/5 of losing an incoming parcel, independently of all other parcels. Given that a parcel
is lost, the probability that it was lost by the second post
office is
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi

P(A|B) = P(A and B)/P(B)

P(2nd|Lost) =  = 1/2 

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