Sample 1

Mean of Sample 1 (μ1) Standard Deviation of Sample 1 (σ1)

Sample 2

Mean of Sample 2 (μ2) Standard Deviation of Sample 2 (σ2)

Type I Error & Power

Alpha (α). [e.g. 5 for α=5%] Type II Error (β). [e.g. 20 for β=20%] Power (1 – β)

Sample Size Ratio

Sample Size Ratio (n1/n2)