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Statistics Unit 6

Unit 6 Interval Estimation (Part 2) Population Mean:Determining the Sample Size

QuestionAnswer
The best choice of sample size usually involves a trade-off between _____ __ ________ cost and precision (size of the confidence interval).
Larger samples provide ______ precision, but are ______ costly. greater, more
The size of the approximate confidence interval depends on the bound A(треугольник) on the sampling error
Let A denote the desired margin of error. A is the amount to be added to and subtracted from the point estimate to obtain an interval estimate.
Created by: NikaKirillova
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