假設(shè)檢驗(yàn)中拒絕域?yàn)椋ǎ?/p>
A.Z<-1.96
B.Z>1.96
C.Z>1.65
D.Z<-1.65
您可能感興趣的試卷
你可能感興趣的試題
一家電器銷售公司的管理人員認(rèn)為,每月的銷售額是廣告費(fèi)用的函數(shù),并想通過(guò)廣告費(fèi)用對(duì)月銷售額作出估計(jì)。用電視廣告費(fèi)用作自變量,銷售額作因變量進(jìn)行回歸分析。下表給出了相關(guān)的分析結(jié)果,
下列說(shuō)法正確的是()
A.廣告費(fèi)用每增加$1,000, 銷售額增加$1.420 211
B.廣告費(fèi)用每增加$1,000, 銷售額增加$1420. 211
C.廣告費(fèi)用每增加$1420.211, 銷售額增加$1000
D.廣告費(fèi)用每增加$1, 銷售額增加$363.689 1
A.組間平方和除以組內(nèi)平方和
B.組內(nèi)均方和除以組間均方
C.組間平方和除以總平方和
D.組間均方和除以組內(nèi)均方
A.(1.645,1.96)
B.(0.40,0.50)
C.(0.45,0.55)
D.(0.419,0.481)
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
最新試題
Which of the following statements is not true?()
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 ().
Descriptive statistics deals with methods of()
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
變量數(shù)列中,各組頻率之和應(yīng)()
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?()
對(duì)某班級(jí)學(xué)生的生活狀況進(jìn)行統(tǒng)計(jì)調(diào)查,下列標(biāo)志中屬于不變標(biāo)志的是()
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)?
最能反映離散程度的指標(biāo)是()
Which of the following is not the goal of descriptive statistics?()