一条统计与概率的英文题Suppose that we are to observe two independent random samples:Y1,Y2,...,Yn denoting a random sample from a normal distribution with mean µ1 and variance σ21;(2上1下） and X1,X2,...,Xm denoting a random sample

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一条统计与概率的英文题Suppose that we are to observe two independent random samples:Y1,Y2,...,Yn denoting a random sample from a normal distribution with mean µ1 and variance σ21;(2上1下） and X1,X2,...,Xm denoting a random sample

一条统计与概率的英文题Suppose that we are to observe two independent random samples:Y1,Y2,...,Yn denoting a random sample from a normal distribution with mean µ1 and variance σ21;(2上1下） and X1,X2,...,Xm denoting a random sample
一条统计与概率的英文题
Suppose that we are to observe two independent random samples:Y1,Y2,...,Yn denoting a random sample from a normal distribution with mean µ1 and variance σ21;(2上1下） and X1,X2,...,Xm denoting a random sample from another normal distribution with mean µ2 and variance σ22（2上2下）An approximation for µ1
− µ2 is given by Y − X,the difference between the sample means.Find
_ _
E [Y − X]
\2 _ _
and Var\3(Y − X)
\4
.

一条统计与概率的英文题Suppose that we are to observe two independent random samples:Y1,Y2,...,Yn denoting a random sample from a normal distribution with mean µ1 and variance σ21;(2上1下） and X1,X2,...,Xm denoting a random sample

一条统计与概率的英文题Suppose that we are to observe two independent random samples:Y1,Y2,...,Yn denoting a random sample from a normal distribution with mean µ1 and variance σ21;(2上1下） and X1,X2,...,Xm denoting a random sample 概率统计的题 概率统计的题, 统计与概率的概念 统计与概率的问题 线性代数与概率统计题 这是数学统计与概率的一个测试题 概率统计与测算方面的问题! 高一统计与概率测试题 统计与概率三道填空题, 求解几个线性代数与概率统计题 统计与概率 吴志高 数学概率与统计 概率与统计 概率与数据统计 概率与统计 概率与统计原理 大学概率与统计,