某企业拟进行一项存在一定风险的完整工业项目投资,有甲、乙两个方案可供选择:已知甲方案的期望值为1 200万元,标准差为300万元;乙方案分配的期望值为1 500万元,标准差为400万元。下列结论中正确的是()。
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In the last paragraph the statement "only one became Pale" indicates that()
A. Pale is the greatest soccer player
B. the greatest players are born with some unique quality
C. Pale's birthplace sets him apart from all the other players
D. the greatest players practice with "balls" made of rags
According to the context, the word "disruption" in paragraph 6 means
The development of modern means of transport__________
These programmes are of immense value to old people.