统计学。帮忙做下题目!!!谢谢!!
Supposethatyouareattemptingtoestimateapopulationmeanbyconstructingaconfidenceinterval...
Suppose that you are attempting to estimate a population mean by constructing a confidence interval. In general, what happens to the margin of error E if i) you increase the sample size ii) you increase the confidence level?
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