Question: Two test items were administered to a reference group R and a focal group F. The proportions correct are p1(R) = 0.70 p1(F) = 0.65

Two test items were administered to a reference group R and a focal group F. The proportions correct are p1(R) = 0.70 p1(F) = 0.65 p2(R) = 0.70 p2(F) = 0.60 Is the second item biased against the focal group?

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