問題詳情

10.If we calculate a sample mean from the population in question 8, with sample sive equal to 2. Let

and

, denote mean and standard deviation of the sample mean. Which of the followingstatement is the most correct one?
(A)


(B)


(C)


(D)

= 5.5,

= 1.89;
(E)

參考答案

答案：B
難度：計算中-1
書單：沒有書單，新增