問題詳情

3. A teacher finds that final grad es in the statistics department are distributed as: A, 25%； B, 25%； C, 40%； D, 5%； F, 5%. Atthe end of a randomly selected semester, the following grades were recorded, Calculate the chi-square test statistic X2 usedto determine if the grade distribution for the departrnent is different than expected. Use a = 0.01.


(A)4.82
(B)6.87
(C)3.41
(D)5.25

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增