Question: A quality control inspector knows that the items she inspects have at most two types of defects: type A and type B: Past experience has

A quality control inspector knows that the items she inspects have at most two types of defects: type A and type B: Past experience has shown that P(A) = :04; P(B) = :05; and P(A union B) = 0:07: Find the probability that a randomly selected item has at most one defect if it has at least one defect.

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