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P(A) = 0,4 、 P(B \mid A) = 0,8 、 P(B \mid A^c) = 0,3 。全確率の定理で を計算。
P(A) = 0,4 、 P(B \mid A) = 0,8 、 P(B \mid A^c) = 0,3 。全確率の定理で を計算。
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