对于涉及正态分布N(μ,σ2)的计算,课本上只是用了一段话来进行说明:“一般的正态总体N(μ,σ2)均可以化成标准正态总体N(0,1)来进行研究。事实上,可以证明,对任一正态总体N(μ,σ2)来说,取值小于x的概率F(x)=Φ(x-μ/σ)”．这实际上是 For the calculation involving the normal distribution N (μ, σ2), the text is only used to describe: "The general normal population N (μ, σ2) can be transformed into the normal normal population N (0,1) In fact, we can prove that the probability F (x) = Φ (x-μ / σ) for any normal population N (μ, σ2) is less than x. This is actually