有没有人能帮帮小弟 Q1:the mean of the probability distribution of the

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有没有人能帮帮小弟 Q1:the mean of the probability distribution of the sample mean is A) A static B
Q1:the mean of the probability distribution of the sample mean is
A) A static B) a random variable C) a parameter D) always equal to sample mean
Q2:A sampling distribution is defined as the probability distribution
A) of possible sample sizes that can be observed from a given population
B) of the values of a statics based on samples of a given size from a given population.
C) Of a population parameter based on independent,random sampling of observations from the population distribution.
D) Of the values of a statistic based on different-sized samples taken from the population distribution.
Q3:For a normal population,an increase in sample size has an effect primarily on which property of the sampling distribution of the sample mean:
a) Dispersion b) Kurtosis C) skewness D) central tendency

1/样本均值的可能性分布平均值是
A,常量 B随机变量 C参量 D与样本均值一致
2、抽样分布的定义是：____可能性分布?
A,既定人口可观察的可能样本数量
B,既定人口中给定样本数量基础上的常量值
C,根据人口分布进行独立和随机抽样产生的人口参量
D)根据人口分布和样本量的不同产生的统计数值
3,对于正常人口数,增加样本量对样本均值的抽样分布哪一项影响最大?
A,散布 B曲线分布 C非对称性D集中趋势
不懂这个专业,昨天想当然做了答案.今天大致翻译了一下,希望对你能有些用处.

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