Quantitative Methods 【Reading 11】Sample
Which of the following statements about testing a hypothesis using a Z-test is least accurate? A)
| If the calculated Z-statistic lies outside the critical Z-statistic range, the null hypothesis can be rejected. |
| B)
| The calculated Z-statistic determines the appropriate significance level to use. |
| C)
| The confidence interval for a two-tailed test of a population mean at the 5% level of significance is that the sample mean falls between ±1.96 σ/√n of the null hypothesis value. |
|
The significance level is chosen before the test so the calculated Z-statistic can be compared to an appropriate critical value. |