A.7~13
B.8~12
C.9~11
D.9.5~10.5
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A.右側(cè)檢驗(yàn)
B.左側(cè)檢驗(yàn)
C.雙側(cè)檢驗(yàn)
D.上側(cè)檢驗(yàn)
A.概率
B.事件
C.實(shí)驗(yàn)
D.樣本空間
最新試題
時(shí)間序列構(gòu)成因素有哪些？分解的基本原理和思路是什么？
某企業(yè)2018年技術(shù)工占50%，2019年新招收了一批學(xué)徒工，使學(xué)徒工的比重增加了10%。假定全廠各級(jí)工資水平均無(wú)變化，則2019年職工總平均工資將（）
A student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of （）.
某企業(yè)的生產(chǎn)計(jì)劃完成百分比采用如下分組，請(qǐng)指出哪項(xiàng)是正確的（）
A cumulative frequency distribution would provide（）.
Which of the following statements is not true？（）
Which of the following is not the goal of descriptive statistics?（）
Descriptive statistics deals with methods of（）
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
A cumulative frequency polygon is also called （）.