← Back to Home
Sample Size Calculator for Comparison of Mean in One Sample
Against a Null Hypothesis Using T-Test
Sample Size
Power
Calculate Sample Size
Desired Power
Value between 0.5 and 0.99
Mean Under the Null Hypothesis (μ₀)
Mean Under the Alternative Hypothesis (μ₁)
Standard Deviation (σ)
Must be > 0
Alpha
Typically 0.05 for 95% confidence
Test Type
Two-sided
One-sided
Calculate Sample Size
Copy
Calculate Power
Mean Under the Null Hypothesis (μ₀)
Mean Under the Alternative Hypothesis (μ₁)
Standard Deviation (σ)
Must be > 0
Sample Size
Must be ≥ 2
Alpha
Typically 0.05 for 95% confidence
Test Type
Two-sided
One-sided
Calculate Power
Copy