Sample size formulae that control the width of confidence interval with a certain confidence level are proposed.

导出在一定置信水平下控制置信区间宽度的样本量公式。

youdao

Sample size formulae that control the width of confidence interval with a certain confidence level are proposed.

导出在一定置信水平下控制置信区间宽度的样本量公式。

youdao