设随机变量x服从N(-1,4²),求下列各值P(x-1.5)ф(0.86)=0.8051ф(0.125)=0.5478 ф(0.13)=0.5577
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/28 12:03:05
设随机变量x服从N(-1,4²),求下列各值P(x-1.5)ф(0.86)=0.8051ф(0.125)=0.5478ф(0.13)=0.5577设随机变量x服从N(-1,4²),
设随机变量x服从N(-1,4²),求下列各值P(x-1.5)ф(0.86)=0.8051ф(0.125)=0.5478 ф(0.13)=0.5577
设随机变量x服从N(-1,4²),求下列各值P(x-1.5)
ф(0.86)=0.8051
ф(0.125)=0.5478
ф(0.13)=0.5577
设随机变量x服从N(-1,4²),求下列各值P(x-1.5)ф(0.86)=0.8051ф(0.125)=0.5478 ф(0.13)=0.5577
N(μ,σ2) ( X-μ)/σ2~N(0,1)
P(x-1.5)=Φ[(-1.5+1)/4]=Φ(-0.125)=1-ф(0.125)=1-0.5478 =0.4522