Question
Every random sample of the same size from a given population will produce exactly the same confidence interval for $\mu$.
Step 1
A random sample is a subset of the population selected in such a way that every member of the population has an equal chance of being included in the sample. Show more…
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Suppose we have two populations, one with a smaller variance than the other. We take two samples of the same size, one from each population, and work out a 95% confidence interval for each mean. The confidence interval for the population with the larger variance will be:" Narrower Wider Same width Same value
The confidence interval for the population mean is a range of values which probably contains the population mean a range of values which contains the population mean the same from sample-to-sample a range of values which probably contains the population mean and the same from sample-to-sample
When taking a systematic random sample of size $n,$ every group of size $n$ from the population has the same chance of being selected.
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Other Effective Sampling Methods
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