【单选题】设A,B是两个事件,若P(A)=0.3,P(B)=0.8,则当P(A ∪ B)为最小值时,P(AB)=( )。
【单选题】设随机变量X~N(2,8 2 ),且P{2<x<4}=0.3,则P(x<0)= [ ]
【简答题】听下面一段对话,回答第1-3小题。 1. What happened in Peter's school yesterday? A. There was a science show. B. There was a sports meet. C. There was a match. 2. Who got the first in the 200-metre race? A. Peter. B. ...
【单选题】What happened in the Forbidden City that Tuesday?
A.
There were far more visitors coming than expected.
B.
A large number of zones were opened to the visitors.
C.
Over 7.9 tons of garbage was collected.
D.
More than 200,000 visitors gathered there.
【单选题】设A,B是两个事件,P(A)=0.3,P(B)=0.8,则当P(A UB)为最小值时,P(AB)等 于( )。
【简答题】会计职业道德应当靠广大会计人员自觉遵守,对违反会计职业道德的行为,不能进行惩罚。 ( )
【简答题】会计职业道德应当靠会计人员自觉遵守,对违反会计职业道德的行为,不能进行惩罚。( )
【单选题】设P(A)=0.8, P(B)=0,7, P(A|B)=0.8, 则下列说法正确的是( )