更多"[单选题]正态曲线下,小于μ+1.96σ的横轴所围的面积是"的相关试题:
[单选题]正态曲线下,小于μ+1.96σ的横轴所围的面积是
A.68.27%
B.97.5%
C.95%
D.99%
E.需查表得知
[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.80.7%
B.85.7%
C.98.7%
D.99.7%
E.99.9%
[单选题]横轴上,μ±1.96σ范围内的面积占正态曲线下总面积的
A.68%
B.85%
C.95%
D.99%
E.100%
[单选题]正态曲线下,从μ-1.96σ到μ的面积为
A.47.5%
B.95%
C.99%
D.90%
E.45%
[单选题]标准正态曲线下,下列哪个u值范围所对应横轴上的面积为98%
A.-2.33~2.33
B.-2.58~2.58
C.-1.95~+∞
D.-1.96~1.96
E.-1.64~1.64
[单选题]标准正态曲线下,横轴上,从-1.64到1.96的面积为
A.99%
B.95%
C.47.5%
D.87.5%
E.92.5%