题目内容
(请给出正确答案)
[单选题]
设X~N(8,0.42),从ξ中抽取样本(X1,X2,…,X8),则X~( )
A.N(1,0.42)
B.N(1,0.02)
C.N(8,0.02)
D.N(8,0.022)
答案
查看答案
A.N(1,0.42)
B.N(1,0.02)
C.N(8,0.02)
D.N(8,0.022)
第2题
A.0.2
B.0.09
C.0.15
D.0.133
第3题
A.{图}
B.{图}
C.{图}
D.{图}
第6题