A.1065
B.1066
C.1067
D.1068
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A.Z<-1.96
B.Z>1.96
C.Z>1.65
D.Z<-1.65
A.7~13
B.8~12
C.9~11
D.9.5~10.5
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
以2000年a0為最初水平，2016年an為最末水平，計(jì)算鋼產(chǎn)量的年平均發(fā)展速度時(shí)，須開（）
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？
在組距數(shù)列中，下限就是（）
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 （）.
變量數(shù)列中，各組頻率之和應(yīng)（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.
The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed.What is the cumulative frequency of the third class？（）
The number of class intervals in a frequency distribution is usually between （）.
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）