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Confidence Interval Calculator

Compute a confidence interval for a population mean.

Inputs

Sample Mean (x̄)

Standard Deviation (σ)

Sample Size (n)

Confidence Level (90, 95, or 99)

95% CI[46.4215, 53.5785]

Margin of Error±3.5785

Standard Error1.8257

No calculations yet — results will appear here automatically.