4.第六章4(1),设样本x1,x2 x1,x4,x4,x,来自总体N(0,1), =(({x)_(2)+(x)_(2)+(x)_(2))}^2+(({x)_(4)+(x)_(3)+(x)_(0))}^2 则当 = __ 时,CY服从x^2分布,自-|||-由度为 __ _。-|||-第1空 段落ò式。 字体,字号,BIUA,三三Ωπr

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