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【单选题】
A sample of n = 16 individuals is selected from a population with μ = 40 and σ = 12, and a treatment is administered to the sample. After treatment, the sample mean is M = 42. How does this sample compare to samples that should be obtained if the treatment has no effect?A.
It is an extreme value that would be very unlikely if the treatment has no effect.
B.
It is much the same as samples that would be obtained if the treatment has no effect.
C.
The mean is noticeably larger than would be expected if the treatment has no effect but it is not quite an extreme sample.
D.
There is no way to compare this sample with those that would be obtained if the treatment had no effect.
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举一反三
【单选题】A facility that serves the role of being a low-cost supply source for markets located outside the country where the facility is located is
A.
an offshore facility.
B.
a source facility.
C.
a contributor facility.
D.
an outpost facility.
【判断题】A storage facility with low rates of product turnover should be laid out in a manner that maximizes utilization of the cubic capacity of the storage facility.
A.
正确
B.
错误
【单选题】Bremo Power facility will turn the old coal storage area into a grass field because______.
A.
no trains will deliver coal to the plant
B.
the plant's coal conveyor is not in use
C.
the natural environment of the plant needs improving
D.
coal will not be used any more to power the plant
【单选题】有关预激综合征的叙述，下列哪一项是错误的（）
A.
在心房与心室之间存在异常的传导组织
B.
在心电图检查中发生率为0.12%～0.20%
C.
常见于风心病二尖瓣狭窄
D.
麻醉处理重点为防治心律失常
E.
室上性心动过速可试用利多卡因治疗
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