2. (5%)設X1 ~N(0,l) , X2 ~N(0,1)，P(X1 +X2 ＞2) = (A)0.025(B)0.0933 (C) 0.1587 (D)無法決定

5. On January 1，2010，Nikon Co. purchased 25% of Ace Corp.'s common stock; no goodwill resulted from the purchase. Nikon appropriately carries this investment at equity and the balance in Nikon，s investment account was $720,000 at December 31, 2010. Ace reported net income of $450,000 for the year ended December 31, 2010，and paid common stock dividends totaling $180,000 during 2010. How much did Nikon for its 25% interest in Ace? (A) $652,500 (B) $765,000 (C) $787，500 (D) $877,500

2. (5%)設X₁ ~N(0,l) , X₂ ~N(0,1)，P(X₁ +X₂ ＞2) =
(A)0.025
(B)0.0933
(C) 0.1587
(D)無法決定

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