作者binchung (ideal)
看板Statistics
标题Re: [问题] 假设检定一问
时间Wed Jun 11 07:20:50 2008
when variance is unknown, you should check the table for t distribution.
If the table you check includes the P-value for the corresdoning
degree of freedom in your problem, then use it no matter how large the sample is.
※ 引述《j780305 (香肠)》之铭言：
: 当σ未知
: 样本数大於30
: 此时算出来的值是要用常态分配来查P-value
: 还是要使用t分配来查P-value
: 先感谢大家的回答了╭(─╴╴─)╮
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