[問題] 變異數區間估計
借問板上高手一題
A confidence interval for the population variance is being formulated, and a
random sample of 35 observations yields a sample variance σ2 = 2,120. What
would interval limits for σ2 be if a 95% confidence interval was desired?
如果不用卡方估計 要用大樣本近似常態
那要如何解這一題?
謝謝
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