作者gleam97 ()
看板Statistics
标题[问题] 这题怎麽算
时间Wed Feb 28 12:33:38 2007
A sample of 20 items provides a sample standard deviation of 5.Please compute
the %95 confidence interval estimate of the population variance
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1F：推 emonedd:母体变异数...卡方信赖区间..很基本的题目吧... 02/28 12:48
2F：推 choufeng:来乱的 02/28 17:40