[Solution] The joint probabilities shown in a table with two rows, A 1 and A 2 and two columns, B 1 and B 2 , are as follows: P (A 1 and B 1) = 0.10,
Question: The joint probabilities shown in a table with two rows, A 1 and A 2 and two columns, B 1 and B 2 , are as follows: P ( A 1 and B 1 ) = 0.10, P ( A 1 and B 2 ) = 0.30, P ( A 2 and B 1 ) = 0.05, and P ( A 2 and B 2 ) = 0.55. Then P ( A 1 |B 2 ), calculated up to two decimals, is what?
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