Hypothesis Test Calculator

Test hypotheses about population means using z-test

Test Type:

Tail Type:

Sample Mean (x̄):

Population Mean (μ₀) - Hypothesized Value:

Population Standard Deviation (σ):

Sample Size (n):

Significance Level (α):

About Hypothesis Testing

Hypothesis testing is a statistical method for making decisions about population parameters based on sample data.

Steps:

State the null (H₀) and alternative (H₁) hypotheses
Choose significance level (α)
Calculate test statistic and p-value
Compare to critical value or α to make decision

Decision Rule: Reject H0 if p-value < alpha