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两个独立样本: \bar x_1 = 100 , s_1 = 10 , n_1 = 50 ;,,。在5%水平上执行双侧Welch t检验。
两个独立样本: \bar x_1 = 100 , s_1 = 10 , n_1 = 50 ;,,。在5%水平上执行双侧Welch t检验。
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