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Testing a Claim about Mean: Known Population SD

Testing a Claim about Mean: Known Population SD

A complete procedure of testing the hypothesis about a population mean is explained here.
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...

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Updated: Apr 5, 2026

Studying Neurobehavioral Effects of Environmental Pollutants on Zebrafish Larvae

Studying Neurobehavioral Effects of Environmental Pollutants on Zebrafish Larvae

Published on: February 5, 2020

Response to Zanella et al

Luca Elli¹, Erika Poggiali²

¹Center for the Prevention and Diagnosis of Celiac Disease, Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Pathophysiology and Transplant, Università degli Studi di Milano, Milan, Italy.

The American Journal of Gastroenterology

|August 12, 2015

Summary

No abstract available in PubMed .

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