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Below you will find a complete set of details for 2 different references / citations that are related to the computation of confidence intervals for a population mean when the population standard deviation is not known.

Reference for Citing the Online Calculator

- Soper, D.S. (2024). Confidence Interval Calculator for the Population Mean [Software]. Available from https://www.danielsoper.com/statcalc

Reference from the Scientific Literature

- Keller, G. (2011). Statistics for Management and Economics (9th edition). Mason, OH: South-Western Cengage.

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