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某城市 n = 12 所私立高校的月学费:\bar X = R 1,500 (巴西雷亚尔), s = R$,200$(巴西雷亚尔)。构造95%置信区间。
某城市 n = 12 所私立高校的月学费:\bar X = R 1,500 (巴西雷亚尔), s = R$,200$(巴西雷亚尔)。构造95%置信区间。
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