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[A" and "B" are independent witnesses in...

[A" and "B" are independent witnesses in a case.The "],[" probability that "A" speaks the truth is "x^(2)" and that "B],[" speaks the truth is " "y" .If "A" and "B" agree on a certain "],[" statement,the probability that the statement is true is "],[[" (a) "(xy)/(xy+(1-x)(1-y))," (b) "(xy)/((1-x)(1-y))],[" (c) "((1-x)(1-y))/(xy+(1-x)(1-y))," (d) "((1-x)(1-y))/(xy)]]

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