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【题目】有两个分类变量X与Y的一组数据,由其列联表计算得k≈4.523,则认为“X与Y有关系”犯错误的概率为( )

A.95% B.90% C.5% D.10%

【答案】C

【解析】P(K2≥3.841)≈0.05,而k≈4.523>3.841这表明认为“X与Y有关系”是错误的可能性约为0.05,即认为“X与Y有关系”犯错误的概率为5%.

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