'Test a hypothesis'在英文中是一个常见的科学术语,其直接翻译为“检验假设”或“验证假说”。在科学研究中,假设是对某一现象或问题提出的初步解释或预测,而检验假设则是通过实验或观察来验证这一解释或预测的正确性。因此,'test a hypothesis'是科学研究过程中不可或缺的...
A. The null hypothesis is accepted. B. The alternative hypothesis is accepted. C. The test is inconclusive. D. A new sample needs to be taken. 相关知识点: 试题来源: 解析 B。如果检验统计量在拒绝域,意味着拒绝原假设,接受备择假设。反馈...
1, pp. 594-595Study Session 3-11-bDefine and interpret a test statistic, a Type I and a Type II error, and a significance level, and explain how significance levels are used in hypothesis testing.When we do not reject a false null hypothesis we have a Type II error....
test a hypothesis 青云英语翻译 请在下面的文本框内输入文字,然后点击开始翻译按钮进行翻译,如果您看不到结果,请重新翻译! 翻译结果1翻译结果2翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 检验假设 翻译结果2复制译文编辑译文朗读译文返回顶部...
题目To test a hypothesis, scientists often conduct ___. A. guesses B. surveys C. experiments D. speculations 相关知识点: 试题来源: 解析 C。为了测试一个假设,科学家经常进行实验。“guesses”猜测,“surveys”调查,“speculations”推测,都不是测试假设的主要方法。反馈 收藏...
21 Table 4.2 - Method summary . ... 25 Table 5.1 -‐ Demographic variables . ...
A. Accept the null hypothesis B. Reject the null hypothesis C. Are unsure and need further analysis D. Have made a calculation E. rror 相关知识点: 试题来源: 解析 B。当计算出的检验统计量落在拒绝域时,我们拒绝原假设。选项 A 接受原假设是错误的。选项 C 不确定且需要进一步分析不符合此时的判...
When conducting a hypothesis test, the null hypothesis is A. the statement we want to prove B. the opposite of the alternative hypothesis C. always true D. never rejected 相关知识点: 试题来源: 解析 B。原假设是备择假设的对立面,B 选项符合。反馈 收藏 ...
test_stat = (x_bar - mu_null)/(s/sqrt(n)) # P-value the p-value of the test statistic (left tailed test) pt(test_stat, n-1) Try it Yourself » Left-Tailed and Two-Tailed Tests This was an example of alefttailed test, where the alternative hypothesis claimed that parameter is...
并且statistical significance(α:if H0 is ture, the probability you happen to observe effect in your sample)和sample size有很大的关系:if the sample size is large enough, even tiny differences from the hypothesis value will be found statistically significant。sample size给了很大可信度。所以,你在...