In order to construct a confidence interval estimate of the population mean, the value of the population mean is needed.
举一反三
- So-called “95% confidence interval for population mean” is applied to estimate the location of population mean, with a confidence level 95%.
- The larger the level of confidence used in constructing a confidence interval estimate of the population mean, the narrower the confidence interval.
- 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:
- In determining an interval estimate of a population mean when σ is unknown, we use a t distribution with n - 1 degrees of freedom.
- Under<br/>a certain confidence level, with the mean as the center, the<br/>reliability range including the population average is called () A: confidence<br/>level B: degree<br/>of freedom C: precision D: confidence<br/>interval