- 概率论与数理统计(经管类)(04183) - 专业知识收录平台"> - 概率论与数理统计(经管类)(04183) - 专业知识收录平台">
A.N(0,5)
B. x(上标2)(5)
C. t(5)
D. F(1,5)
正确答案是B
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