In a test of the mean of a population, if the population variance is:
A: known, a z- distributed test statistic is appropriate.
B: known, a t- distributed test statistic is appropriate.
C: unknown, a z -distributed test statistic is appropriate.
A: known, a z- distributed test statistic is appropriate.
B: known, a t- distributed test statistic is appropriate.
C: unknown, a z -distributed test statistic is appropriate.
举一反三
- Which of the following is a statistic that can be used to test hypotheses about a single population parameter？（ ） A: χ2 statistic B: F statistic C: Durbin Watson statistic D: t statistic
- Which of the following is a statistic that can be used to test hypotheses about a single population parameter? A: F statistic B: t statistic C: LM statistic D: Durbin Watson statistic
- The test statistic measures how close the computed sample statistic has come to the hypothesized population parameter.
- Which of the following is a statistic that can be used to test hypotheses about a single population parameter? 未知类型：{'options': ['F statistic', 't statistic', 'Durbin Watson statistic', ''], 'type': 102}
- A F-statistic is used to test the hypothesis that: A: two population variances are equal. B: MSE equals 0. C: a z-statistic is greater than 0. D: a z statistic less than a t statistic.