Symbol in context

$z_{\alpha/2}$

This entry links every published equation using this exact notation. Its meaning may change between equations.

Used in 5 equations

n \approx \frac{2\,p(1-p)\,(z_{\alpha/2} + z_{\beta})^2}{\delta^2} .

This equation gives an approximation: it relates the quantities while allowing an approximation.

z_{\alpha/2} \approx 1.96

This equation gives an approximation: it relates the quantities while allowing an approximation.

\hat p \; \pm \; z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}},

This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.

z_{\alpha/2} \approx 1.96

This equation gives an approximation: it relates the quantities while allowing an approximation.

n \;\gtrsim\; \frac{\left(z_{\alpha/2} + z_{\beta}\right)^{2}}{9\,\delta^{2}}

This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.