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Old 04-07-2013, 11:45 AM
Rahul Sinha Rahul Sinha is offline
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Join Date: Apr 2013
Posts: 9
Default Re: *ANSWER* Homework1 - Q3

Nothing! Your line of reasoning is correct.
So, P(B|B) can be obtained as the P(choosing a bag)*P(getting a black ball)*P(getting the second black ball). If we choose the BB bag, this evaluates as 1/2*1*1. If we choose the BW bag, the values are 1/2*1/2*0 = 0.
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