When can we reject the null hypothesis?

Zoe Miller | 2023-06-17 03:14:06 | page views:1602
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Noah Wilson

Works at Microsoft, Lives in Redmond, WA
作为一名统计学领域的专家,我很高兴能够回答您关于何时拒绝零假设的问题。在统计学中,零假设(null hypothesis)是一个假设检验的起点,通常表示没有效应或者没有差异。我们通过收集数据和进行统计分析来检验这个假设是否成立。拒绝零假设意味着我们有足够的证据表明,观察到的数据不太可能是在零假设为真的情况下产生的,从而支持备择假设(alternative hypothesis)。

在进行假设检验时,我们通常会使用P值(P-value)作为决策的依据。P值是在零假设为真的条件下,观察到当前样本或更极端样本的概率。一个较小的P值表明,观察到的样本结果在零假设为真的情况下出现的概率较低,因此我们更倾向于拒绝零假设。

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2024-04-29 12:43:10

Ethan Martin

Works at the International Atomic Energy Agency, Lives in Vienna, Austria.
If the P-value is less, reject the null hypothesis. If the P-value is more, keep the null hypothesis. 0.003 < 0.05, so we have enough evidence to reject the null hypothesis and accept the claim.Oct 17, 2009
2023-06-26 03:14:06

Julian Turner

QuesHub.com delivers expert answers and knowledge to you.
If the P-value is less, reject the null hypothesis. If the P-value is more, keep the null hypothesis. 0.003 < 0.05, so we have enough evidence to reject the null hypothesis and accept the claim.Oct 17, 2009
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