# Determining the Sampling Distribution

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Question: If you wish to estimate a population mean with a sampling distribution error SE = 0.28 using a 95% confidence interval and you know from prior sampling that sigma^2 is approximately equal to 5.4, how many observations would have to be included in your sample?

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##### Solution Summary

This solution is comprised of a detailed explanation of sample size calculations. This solution mainly discussed the question in which we need to calculate the sample size. The calculation with formula is provided in the solution.

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