样本数计算实战-5(practice in sample size determination)-林星帆
根据中心极限定律以及t分布,95%置信区间的范围基本等于:sample mean
附件2 样本量字码 sample size code
if sample size equals.or exceeds batc
sqrt(sample_size) # 绘制正态分布的pdf norm = scipy.stats.
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