掌握样本均值分布的特性(形状、均值、标准误)
Master the characteristics of sample mean distribution (shape, mean, standard error)
区分标准误、标准差和取样误差
Distinguish standard error, standard deviation, and sampling error
学会利用中心极限定律求解标准误
Learn how to use the central limit law to calculate standard errors
学会计算样本均值分布中的概率
Learn how to calculate the probability in the sample mean distribution
掌握假设检验的基本步骤
Master the basic steps of hypothesis testing
学会分辨假设检验的两类错误
Learn how to distinguish two types of errors in hypothesis testing