Hypothesis Testing Calculator
Enter a sample mean, population mean, population standard deviation, sample size, and significance level to perform a z-test. Get the z-statistic, p-value, and a reject/fail-to-reject decision.
Inputs
Results
Z-Statistic
2.4000
P-Value (Two-Tail)
0.016395
P-Value (One-Tail)
0.008198
Decision
Reject H0 (p = 0.0164 < 0.05)
Standard Error
0.8333
Critical Value (Two-Tail)
+/- 1.9604
Cohen's d (Effect Size)
0.4000