求:(1)常数c;
(2)P{-0.5≤X≤0.5};
(3)E(x(上标3)).

">

求:(1)常数c;
(2)P{-0.5≤X≤0.5};
(3)E(x(上标3)).

">

设随机变量Ⅸ的概率密度为


求:(1)常数c;
(2)P{-0.5≤X≤0.5};
(3)E(x(上标3)).

设随机变量Ⅸ的概率密度为


求:(1)常数c;
(2)P{-0.5≤X≤0.5};
(3)E(x(上标3)).


【正确答案】:
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