关于正态分布和标准差的If x is normally distributed with mean u and standard deviation four,and given that the probability that x is less 32 is 0.0228,find the value of u.如果x服从正态分布均值是u,标准差是4,并且x小于32的
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![关于正态分布和标准差的If x is normally distributed with mean u and standard deviation four,and given that the probability that x is less 32 is 0.0228,find the value of u.如果x服从正态分布均值是u,标准差是4,并且x小于32的](/uploads/image/z/15214581-45-1.jpg?t=%E5%85%B3%E4%BA%8E%E6%AD%A3%E6%80%81%E5%88%86%E5%B8%83%E5%92%8C%E6%A0%87%E5%87%86%E5%B7%AE%E7%9A%84If+x+is+normally+distributed+with+mean+u+and+standard+deviation+four%2Cand+given+that+the+probability+that+x+is+less+32+is+0.0228%2Cfind+the+value+of+u.%E5%A6%82%E6%9E%9Cx%E6%9C%8D%E4%BB%8E%E6%AD%A3%E6%80%81%E5%88%86%E5%B8%83%E5%9D%87%E5%80%BC%E6%98%AFu%2C%E6%A0%87%E5%87%86%E5%B7%AE%E6%98%AF4%2C%E5%B9%B6%E4%B8%94x%E5%B0%8F%E4%BA%8E32%E7%9A%84)
关于正态分布和标准差的If x is normally distributed with mean u and standard deviation four,and given that the probability that x is less 32 is 0.0228,find the value of u.如果x服从正态分布均值是u,标准差是4,并且x小于32的
关于正态分布和标准差的
If x is normally distributed with mean u and standard deviation four,and given that the probability that x is less 32 is 0.0228,find the value of u.
如果x服从正态分布均值是u,标准差是4,并且x小于32的可能性事0.0228,求u的值.
关于正态分布和标准差的If x is normally distributed with mean u and standard deviation four,and given that the probability that x is less 32 is 0.0228,find the value of u.如果x服从正态分布均值是u,标准差是4,并且x小于32的
假设标准正态分布的累积分布函数为phi(x),则phi((32-u)/4)=0.0228,则计算得u=32-4*phi^{-1}(0.0228),于是u=39.9963.
matlab程序如下:
u=32-4*norminv(0.0228,0,1)
%%%函数norminv为标准正态分布累积分布函数的逆函数,matlab称为正态分布临界值函数.