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【简答题】
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反馈参考答案：
举一反三
【简答题】It is used to describe a frequency distribution which is not symmetrical and the left tail is stretched out longer than the right.
【简答题】It is a discrete probability distribution of the number of successes in a sequence of independent Bernoulli random experiments.
【单选题】Distribution center is an economic organization specialized in goods distribution activities. It is also a logistics node integrating processing, tally and ( ) functions.
A.
Purchase
B.
production
C.
sales
D.
delivery
【判断题】Wal-Mart is well known for their progressive distribution systems. While distribution is important, it is not a marketing decision.
A.
正确
B.
错误
【简答题】It is a distribution that the area between negative 1.96 and positive 1.96 is 95%.
【单选题】If the expectation of a sampling distribution is located at the parameter it is estimating, then we call that sampling distribution
A.
unbiased.
B.
minimum variance.
C.
biased.
D.
random.
【简答题】It is a distribution similar to normal distribution, but it is not a normal distribution.
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