Minimum Sample Size
Population Size900
Margin of Error0.05
Confidence0.95
Power0.5
Response Distribution (Proportion)0.33
z(alpha/2) + z(beta)1.95996398454005
z(alpha) + z(beta)1.64485362695147
Minimum Sample Size (2 sided test)246.835572754175
Minimum Sample Size (1 sided test)189.189624151687


Minimum Sample Size (infinite population)
Population Sizeinfinite
Margin of Error0.05
Confidence0.95
Power0.5
Response Distribution (Proportion)0.33
z(alpha/2) + z(beta)1.95996398454005
z(alpha) + z(beta)1.64485362695147
Minimum Sample Size (2 sided test)339.738618102188
Minimum Sample Size (1 sided test)239.278263080198