亮同學
2017-07-10 11:15Which of the following statements regarding a one-tailed hypothesis test is correct? A.The rejection region increases in size as the level of significance becomes smaller. B.A one-tailed test more strongly reflects the beliefs of the researcher than a two-tailed test. C.The absolute value of the rejection point is larger than that of a two-tailed test at the same level of significance. 老師您好，A我能理解 B和C不太懂，麻煩講解一下，謝謝！
所屬： 視頻位置 相關試題
來源： 視頻位置 相關試題
1個回答
金程教育顧老師助教
2017-07-10 14:48
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學員你好，B的意思是單尾檢驗檢驗者對總體參數(shù)的大于還是小于假設值已經(jīng)有一個基本的判斷，C的意思是對相同的顯著性水平，比如5%，單尾檢驗找的是5%對應的關鍵值，而雙尾檢驗找的是2.5%對應的關鍵值（兩尾加起來5%），顯著性水平越大，找出來的關鍵值的絕對值越小。
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