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.
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
- 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}
- 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.
- The test statistic measures how close the computed sample statistic has come to the hypothesized population parameter.
内容
- 0
If the p-value of a test statistic is .20 and the level of significance is .05, the null hypothesis should be rejected.
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An unbiased estimator is a sample statistic, which has an expected value equal to the value of the population parameter.
- 2
When we utilize tabular method for transportation problems, the criterion for the optimal solution is ( ). A: the test numbers of non-basic variables are greater than or equal to 0 B: the test numbers of basic variables are less than or equal to 0 C: the test numbers of basic variables are greater than or equal to 0 D: the test numbers of non-basic variables are less than or equal to 0
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Statistic
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When estimating population parameters, a point estimate is:? always equal to a population value.|a range of possible values for a population parameter.|the population mean.|a statistic that estimates a population parameter.