【单选题】【消耗次数：1】
关于假设检验，下列错误的是（）
①
假设检验的基本思路是首先对总体参数值提出假设，然后再利用样本提供的信息去验证先前提出的假设是否成立。
②
假设检验应确定拒绝域并做出拒绝还是接受H的统计判断。
③
要根据研究目的来建立零假设和备择假设。
④
一般来讲，应该先确定零假设，再确定备择假设。
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相关题目
【多选题】
在假设检验中，若检验结果是接受零假设H，则下面结论正确的是
①
零假设一定成立
②
根据样本值尚不能推翻零假设
③
不能保证零假设为真
④
不可能会犯第二类错误
⑤
备择假设一定成立
【单选题】
关于假设检验，说法正确的是
①
单侧检验优于双侧检验
②
若P>α,则接受H0犯错误的可能性很小
③
采用配对t检验还是两样本t检验是由试验设计方案所决定的
④
检验水准α只能取0.05
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