微信扫一扫
实时资讯全掌握
|
Which of the following statements about sample statistics is least accurate? A. The z-statistic is used to test normally distributed data with a known variance, whether testing a large or a small sample. B. The z-statistic is used for nonnormal distributions with known variance, but only for large samples. C. There is no sample statistic for non-normal distributions with unknown variance for either small or large samples. |