【单选题】What made Joseph give up his dream of buying the Lego Death Star?
A.
The extremely high price of the toy.
B.
The denying attitude of the father.
C.
The time he needs to save up the money.
D.
The change of his focus of interest.
【简答题】设三事件A、B、C两两独立,则A、B、C相互独立的充要条件为( ). (a) A与BC独立 (b) AB与A∪C独立 (c) AB与AC独立 (d) A∪B与A∪C独立
【判断题】在考量和描写学习者的汉语学习水平时,需要制定科学的、操作方便的、绝对的标准。
【简答题】设A,B为两个事件,且已知概率P(A)>0,P(B)>0,若事件A,B相互独立,则事件 , ( ). (a)相互独立且互斥 (b)相互独立且不互斥 (c)不相互独立且互斥 (d)不相互独立且不互斥
【简答题】Ryan,with the help of others,is fulfilling his dream of help African people to ___________.
【简答题】How did Schultz build his dream of Starbucks?
【单选题】设A、B、C三事件两两独立,则A、B、C相互独立的充要条件是()。 A、A与BC独立 B、AB与A∪C独立