请写出样本空间:(1)袋中有5只求导,3只黑球2只白球,从袋中任意取一球,观察其颜色;(2)某运动员投篮时,连续5次都命中,观察其投篮次数。
设x表示一个沿数轴做随机运动的质点位置,试说明下列各对事件间的关系(1)A ={|x-a|<σ},B ={x - a<σ};(2)A ={x>20},B ={x≤22};(3)A ={x>22},B ={x<19}
Before I can give you an estimate I must ________ the amount of material required.
A. make out
B. work out
C. turn out
D. pick out
If she marries a foreigner, will her ________ as a British citizen be affected?
A. reputation
B. credit
C. status
D. admission