Whenever the null hypothesis is not rejected, the alternative hypothesis:
举一反三
- 7) The power of a test is measured by its capability of A: A) rejecting a null hypothesis that is true. B: B) not rejecting a null hypothesis that is true. C: C) rejecting a null hypothesis that is false. D: D) not rejecting a null hypothesis that is false.
- 在实际的统计检验过程中，我们通常会先提出一个初始假设，称为虚无假设（null hypothesis），再提出一个备择假设（alternative hypothesis）作为研究假设（research hypothesis），再采用适宜的统计方法对 成立的概率进行估计。
- It follows from Maxwell’s hypothesis(假设) that whenever there is a change in an electric field, a magnetic field is produced.
- If the p-value of a test statistic is .20 and the level of significance is .05, the null hypothesis should be rejected.
- In a test of H0 : μ = 200 against HA : μ ≠200, a sample of size 10 produces a sample mean of 206 and a p-value of 0.09. Thus, at the 0.05 level of significance: (H0 is the null hypothesis, HA is the alternative hypothesis) ( ) A: there is sufficient evidence to conclude that μ≠200 B: there is sufficient evidence to conclude that μ = 206 C: there is insufficient evidence to conclude that μ = 200 D: there is insufficient evidence to conclude that μ≠200.