Hypothesis Testing Calculator

Perform statistical hypothesis tests using z-tests or t-tests. Choose one-tailed or two-tailed tests, calculate p-values, and visualize your test statistic on the distribution curve.

Hypothesis Test Setup

Test Type

Tail Type

Sample Mean (x̄)

Population Mean (μ₀)

Standard Deviation (σ)

Sample Size (n)

Significance Level (α)

Ergebnisse

Geben Sie Werte ein und klicken Sie auf Berechnen, um das Ergebnis zu sehen.

Theory & Formula

Hypothesis Testing

Hypothesis testing is a statistical method to make decisions about population parameters based on sample data.

Steps

State null (H₀) and alternative (Hₐ) hypotheses
Choose significance level (α)
Calculate test statistic
Find p-value
Make decision: reject H₀ if p-value < α

Z-Test Formula

\(z = \frac{\bar{x} - \mu_0}{\sigma / \sqrt{n}}\)