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【判断题】
设计构件时,必须在满足安全工作的前提下,尽量节省材料。( )A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】(预习内容)When we say that a sample is representative of the population, we mean that
A.
the results found for the sample are similar to those we would find for the entire population.
B.
the sample is very large.
C.
the sample was chosen in the best possible way.
【单选题】If we were making inferences from a single sample, we would expect that there would be a ____ percent probability that the sample mean or proportion generated from our sample results would be within t...
A.
95.44
B.
68.26
C.
97.5
D.
99.99
【简答题】The group of people from whom we choose the sample.
【简答题】在新文化运动中,胡适作过哪些重大的贡献?
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