問題詳情
13.The scores of individual students on the American College Testing (ACT) Program compositecollege entrance examination have a normal distribution with mean 18.6 and standard deviation6.0. At Northside High, 36 seniors take the test. If the scores at this school have the samedistribution as national scores, what is the standard deviation of the sampling distribution ofthe average (sample mean) score for the 36 students?
(A) 1.0
(B) 3.1
(C) 6.0
(D) 18.6
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