Assertion: random sample | /r/HasProperty | mean x ¯
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text: Efron and Tibshirani suggest the following algorithm for comparing the means of two independent samples: Let x 1 , … , x n {\displaystyle x_{1},\ldots ,x_{n}} be a random sample from distribution F with sample mean x ¯ {\displaystyle {\bar {x}}} and sample variance σ x 2