A . 50.5%
B . 55.2%
C . 62.8%
D . 68.2%
E . 69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的()A .50.5%B . 55.2%C . 62.8%D . 68.2%E . 69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的( )A.50.5%B.55.2%C.62.8%D.68.2%E.69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的A.50.5%B.55.2%C.62.8%D.68.2%E.69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的A.50.5%B.55.2%C.62.8%D.68.2%E.69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的A.50.5%B.55.2%C.62.8%D.68.2%E.69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的A.50.5%B.55.2%C.62.8%D.68.2%E.69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的()A.50.5%B.55.2%C.62.8%D.68.2%E.69.2%
[单选题]正态曲线下面积有一定的规律,μ±1σ的面积占总面积的A.50.5%B.55.2%C.62.8%D.68.2%E.69.2%
[单选题]正态曲线下面积有一定的规律,μ±3σ的面积占总面积的()A . 80.70%B . 85.70%C . 98.70%D . 99.70%E . 99.90%
[单选题]正态曲线下面积有一定的规律,μ±2σ的面积占总面积的()A .80.5%B . 85.5%C . 88.5%D . 90.5%E . 95.5%