ZMeanEstimate Command

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ZMeanEstimate( <List of Sample Data>, <σ>, <Level> )
Calculates a Z confidence interval estimate of a population mean using the given sample data, the population standard deviation and confidence Level.
Results are returned in list form as {lower confidence limit, upper confidence limit}.
ZMeanEstimate( <Sample Mean>, <σ>, <Sample Size>, <Level> )
Calculates a Z confidence interval estimate of a population mean using the given sample statistics, the population standard deviation and confidence level.
Results are returned in list form as {lower confidence limit, upper confidence limit}.
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