Confidence Intervals for One Mean:  Determining the Required Sample Size. @jbstatistics
Confidence Intervals for One Mean:  Determining the Required Sample Size.  @jbstatistics
Uploaded February 2012 | Updated September 2026, 2 hours ago
I have an updated and revised version of this video available at youtu.be/7zcbVaVz_P8. Please watch the improved version.

I find the sample size required to obtain a given margin of error in a confidence interval for mu. I discuss the appropriate formula and work through an example.
Confidence Intervals for One Mean:  Determining the Required Sample Size.The Sampling Distribution of the Ratio of Sample VariancesContinuous Probability Distributions: The Normal Distribution (STAT  I – Full Lecture)An Introduction to Inference for One Variance (Assuming a Normally Distributed Population)Z Tests for One Mean:  The p-valueConfidence Intervals for One Mean:  Investigating the Normality AssumptionUsing the F Table to Find Areas and PercentilesConfidence Intervals for a Proportion:  Determining the Minimum Sample SizeInference on the Slope (An Example)An Introduction to Discrete Random Variables and Discrete Probability DistributionsHypothesis Tests on One Mean:  Finding the Rejection Region in a Z testAn Introduction to Inference for a Proportion
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Confidence Intervals for One Mean: Determining the Required Sample Size.

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