A. $\lim_{n\to\infty}P\left\{\left|\frac{1}{n}\sum_{i=1}^{n}X_{i}-n\mu\right|<\varepsilon\right\}=1$
B. $\lim_{n\to\infty}P\left\{\left|\frac{1}{n}\sum_{i=1}^{n}X_{i}-\mu\right|<\varepsilon\right\}=1$
C. $\lim_{n\to\infty}P\left\{\left|\frac{1}{n}\sum_{i=1}^{n}X_{i}-n\mu\right|<\varepsilon\right\}=0$
D. $\lim_{n\to\infty}P\left\{\left|\frac{1}{n}\sum_{i=1}^{n}X_{i}-\mu\right|<\varepsilon\right\}=0$
1 设总体Xsim N(0,1)，X_(1),X_(2),...,X_(n)为X的样本，则((X_(1)-X_(2))/(X_(3)+X_{4)})^2服从__
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4.(1)设样本X_(1),X_(2),...,X_(6)来自总体N(0,1),Y=(X_(1)+X_(2)+X_(3))^2+(X_(4)+X_(5)+X_(