hypothesis testing

binfengno22022-10-04 11:39:541条回答

hypothesis testing
tell the step

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统计中,hypothesis testing是什么意思 统计中,hypothesis testing是什么意思 这种方法是如何操作的 xyt1981年前1: antaro 共回答了19个问题 | 采纳率89.5%

中文名是“假设检验”.通常是对某一统计量,检验其是否等於某个目标值,或是检验其是否大於/小於某个目标值之类的.
先要提出原假设与备择假设,然后根据具体已知条件选取合适的检验分布.最后可以得到一个拒绝域,用来最后决定是接受原假设还是拒绝原假设.
建议随便找本什麽书看一下,就能有个大致的概念了.

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Hypothesis Testing Hypothesis Testing In a study of iron deficiency among infants, the blood hemoglobin levels were compared between two samples of infants, who follow different feeding regimes. One group consisted of breast fed infants, while the other group was fed with a standard baby formula without any iron supplements. The summary of results on blood hemoglobin levels for infants at 12 months of age is as follows: Group Sample size Mean Standard deviation Breast –fed 23 13.3 1.7 Baby formula 19 12.4 1.8 Is there sufficient evidence to indicate that the mean blood hemoglobin level is higher among the breast-fed babies? Test at  = 0.05. [sp2 = 3.0475; t = 1.663; Do not reject H0] ls8503161年前2: amge_ty 共回答了20个问题 | 采纳率90%

Hypothesis:A statement about the value of a population parameter developed for the purpose of testing.Hypothesis testing:假设检验 Based on sample evidence and probability theory; Used to determine whe...

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