设随机变量X有期望E(X)与方差D(X)则对任意正数ε，有()
A、P(|X-E(X)|＜ε)=D(X)/ε2
B、P(|X-E(X)|＜ε)＞D(X)/ε2
C、P(|X-E(X)≥ε)≤1-D(X)/ε2
D、P(|X-E(X)|≥ε)≤D(X)/ε2
【正确答案】：D
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设随机变量X有期望E(X)与方差D(X)则对任意正数ε，有()
A、P(|X-E(X)|＜ε)=D(X)/ε2
B、P(|X-E(X)|＜ε)＞D(X)/ε2
C、P(|X-E(X)≥ε)≤1-D(X)/ε2
D、P(|X-E(X)|≥ε)≤D(X)/ε2
【正确答案】：D
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