16. On any given day, a salesman can earn $0 with a 30% probability, $100 with a 20% probability, or $300 with a 50% probability. His expected earnings equal
(A) $0.
(B) $100.
(C)$150.
(D) $170.

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統計: A(0), B(0), C(0), D(1), E(0) #2847475

詳解 (共 1 筆)

#6064561
假設收益為X,則期望收益計算方式為收益乘...
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