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【单选题】
关于假设检验,下列说法中正确的是A.
单侧检验优于双侧检验
B.
采用配对t检验还是t检验取决于研究设计
C.
检验结果若拒绝H0，犯错误的可能性很小
D.
由于配对t检验的效率高于t检验，因此最好配对t检验
E.
进行假设检验时拒绝H0。既可能犯I型错误，也可能犯Ⅱ型错误
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举一反三
【单选题】下面( )不是document对象的方法.
A.
getElementByName();
B.
getElementById();
C.
write()
D.
reload()
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