,(X)_(6)是总体_(1),(X)_(2),... ,(X)_(6)的样本，_(1),(X)_(2),... ,(X)_(6)为样本方差。试求：_(1),(X)_(2),... ,(X)_(6)的分布及参数。

1.设是总体的样本，为样本方差。

试求：的分布及参数。

参考答案与解析：

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