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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 (μ
0
):
Mean Under the Alternative Hypothesis (μ
1
):
Standard Deviation (σ):
Must be > 0
Alpha:
Typically 0.05 for 95% confidence
Test Type:
Two-sided
One-sided
Calculate Sample Size
Calculate Power
Mean Under the Null Hypothesis (μ
0
):
Mean Under the Alternative Hypothesis (μ
1
):
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