A.（1.645，1.96）
B.（0.40，0.50）
C.（0.45，0.55）
D.（0.419，0.481）
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A.F0.05，10，20 = 1/F0.95，10，20
B.F0.05，10，20 = 1/F0.05，20，10
C.F0.95，10，20 = 1/F0.95，20，10
D.F0.95，10，20 = 1/F0.05，20，10
A.第一類錯(cuò)誤被稱為棄真錯(cuò)誤
B.第一類錯(cuò)誤被稱為納偽錯(cuò)誤
C.第二類錯(cuò)誤是原假設(shè)不正確，但卻被接受的錯(cuò)誤
D.第一類錯(cuò)誤是原假設(shè)正確，但卻被拒絕的錯(cuò)誤
A.2.14
B.5.66
C.7.28
D.15
A.7%
B.8%
C.9%
D.10%
A.樣本空間
B.事件
C.實(shí)驗(yàn)
D.概率
最新試題
為什么在計(jì)算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計(jì)算變異指標(biāo)？
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 approximate range of the number of phone calls arriving each hour？（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.
A cumulative frequency polygon is also called （）.
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？
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 （）.
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
Which of the following is not the goal of descriptive statistics?（）