【单选题】This is a picture _______ Qi Baishi.
【单选题】设总体 X 服从正态分布 N(0,1), x 1 , x 2 , ... , x n 是来自 X 的样本,则 x 1 2 + x 2 2 +,...,+ x n 2 ~ ( )
【判断题】Qi baishi is a artist.
【单选题】【2020数一】设X1,X2,......,Xn为来自总体X的简单随机样本,P(X=0)=P(X=1)=1/2, Φ(x) 为标准正态分布的分布函数,利用中心极限定理,可得P(X1+X2+......+X100 ≤ 55)的近似值为 注:X1,X2,......,Xn的1,2,......,n均为下标,X1+X2+......+X100的1,2,......,100也均为下标
【单选题】设随机变量 X 1 , X 2 ,...,X n 相互独立, S n = X 1 + X 2 + ... + X n ,则根据中心极限定理,当 n 充分大时, S n 近似服从正态分布,只要 X 1 , X 2 ,...,X n ( ).
【判断题】Qi Baishi was a writer.
【单选题】Qi Baishi's style of painting often leaves the audience _______ and makes them use their imagination. [ ]
【判断题】Qi Baishi is very famous for painting bamboo.
【简答题】Qi Baishi was an o________________ artist in China . He was very famous.