問題詳情
1.()假設甲、乙兩縣人口一樣多，曱、乙兩縣的國民所得分布都很接近常態分布，其中甲縣平均國民 所得為100萬元，標準差為5萬元；乙縣平均國民所得為120萬元，標準差為10萬元。若用粗線表示甲 縣國民所得分布曲線；細線表示乙縣的國民所得分布曲線，則下列哪一個分布圖較為正確？（單選）
(A)
(B)
(C)
(D)
(E)
(A)
(B)
(C)
(D)
(E)
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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