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.
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