Confidence Interval Calculator
Calculate confidence interval for a population mean using z critical values.
Result
Confidence Interval Formula
CI = x̄ ± z × (σ/√n)
Confidence Interval Example Calculation
x̄=50, σ=10, n=100, 95% CI: 50 ± 1.96×1 = [48.04, 51.96].
Frequently Asked Questions about Confidence Interval
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