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confidence intervals for a random variable that follows a t-distribution must be wider (narrower) when the degrees of freedom are less (more) for a given significance level. 随着自由度的增加,置信区间应该是变窄吧?
confidence intervals for a random variable that follows a t-distribution must be wider (narrower) when the degrees of freedom are less (more) for a given significance level.
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精品问答
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