Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
税务审计员希望以 sigma = R 500 (巴西雷亚尔)、误差限 R$,100 (巴西雷亚尔)、99%置信水平估计发票平均金额。最小样本量 n$ 是多少?
税务审计员希望以 sigma = R 500 (巴西雷亚尔)、误差限 R$,100 (巴西雷亚尔)、99%置信水平估计发票平均金额。最小样本量 n$ 是多少?
Natural Language
Math Input
Extended Keyboard