Sample Size Formula

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This Demonstration calculates the sample size (an integer) that produces a sample mean within the given margin of error. For a confidence level of ,
is the
quantile of a standard normal distribution.
Contributed by: David Gurney (March 2011)
Open content licensed under CC BY-NC-SA
Snapshots
Details
The minimum sample size formula can be found in most elementary statistics texts. The formula appears in M. Sullivan, Fundamentals of Statistics, 2nd ed., Upper Saddle Creek, NJ: Pearson Education, Inc., 2008 p. 414.
Permanent Citation
"Sample Size Formula"
http://demonstrations.wolfram.com/SampleSizeFormula/
Wolfram Demonstrations Project
Published: March 7 2011