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.
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.
C
举一反三
- If a paired comparison test of mean differences supports rejecting the null hypothesis, then the: A: independence of the samples is statistically significant. B: standard error of the mean differences is low relative to the sample mean difference. C: difference in means is not statistically significant.
- Whenever the null hypothesis is not rejected, the alternative hypothesis:
- If the p-value of a test statistic is .20 and the level of significance is .05, the null hypothesis should be rejected.
- Using the confidence interval when conducting a two-tail test for the population mean we do not reject the null hypothesis if the hypothesised value for µ:
- null == undefined，返回( )。 A: true B: false C: null D: undefined
内容
- 0
标识符不能是true、false和null（尽管true、false和null不是Java关键字）。
- 1
If we reject a null hypothesis at the 0.05 level of significance, then we must also reject it at the 0.10 level.
- 2
在JavaScript中，alert（undefined==null）；会弹出（）？ A: FALSE B: TRUE C: undefined==null D: null
- 3
null===undefined A: true B: false C: NaN D: underfined
- 4
console.log(null==undefined); A: true B: false C: 1 D: 0