选择题：— _____________ .— I agree with you.选择一项：A. I thin

题目内容：
— _____________ .
— I agree with you.
选择一项：
A. I think we should bring back death penalty for serious crimes.
B. There are quite a lot of minor crimes in this city.
C. The supermarket was broken into last night.
参考答案：

设X1,X2,…,Xn是总体N(u,02)的样本,X是样本均值,记S2=. . . . . . .

设X1,X2,…,Xn是总体N(u,02)的样本,X是样本均值,记S2=. . . . . . . . , , . . , - "isl s=x-a2,则服从自

分类：人文英语  2  题型：选择题
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-Wow! This is a marvelous room! You must spend a l

-Wow! This is a marvelous room! You must spend a lot of time and energy in it.-_

分类：人文英语  2  题型：选择题
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设x1,x2,x是来自N(u,2)的样本,则E((x-2)=i - 1 A ( n - 1 ) a

设x1,x2,x是来自N(u,2)的样本,则E((x-2)=i - 1 A ( n - 1 ) a 2 Ba 2

分类：人文英语  2  题型：选择题
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