单项选择题
当两尾临界值u0.05=1.96时,是指( )
A.
P(U≤1.96)=0.025
B.
P(U>1.96)=0.025
C.
P(|U |≤1.96)=0.05
D.
P(|U |>1.96)=0.05
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