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Population Mean (with known standard deviation) Confidence Interval Formula

Below you will find descriptions and details for the formula that is used to compute the confidence interval for a population mean in situations where the population standard deviation is known.

Confidence interval for a population mean:
Confidence interval for a population mean formula
Variable definitions:
x = sample mean
z = a standard normal score
α = desired confidence level
σ = population standard deviation
n = sample size
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