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【单选题】
两样本均数比较的t检验中,结果为p小于0.05,有统计数意义。p愈小则A.
说明两样本均数差别愈大
B.
说明两总体均数差别愈大
C.
说明样本均数与总体均数差别愈大
D.
愈有理由认为两样本均数不同
E.
愈有理由认为两总体均数不同
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举一反三
【单选题】Risk can be divided into two basic types business risk and pure (or insurable risk). Of the following, which one(s) fall(s) under business risk?
B.
liability loss B direct property loss
C.
profit loss
D.
personnel-related loss
E.
B and
【简答题】Systematic risk and unsystematic risk
【单选题】The WBS is:
A.
An organization oriented family tree of the project.
B.
A task oriented family tree of the project.
C.
A cost centered structure of the project.
D.
Only required on large complex projects where separately identifiable work packages are difficult to construct.
E.
None of the above.
【单选题】If an investor prefers less risk to more risk, then he is .
A.
risk-averse
B.
a risk-lover
C.
a risk-taker
D.
a risk-predictor
【简答题】risk insured/risk covered
【单选题】How are continuous fibers typically oriented in fibrous composites?
A.
Aligned
B.
Partially oriented
C.
Randomly oriented
D.
All of the above
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