# Sample Size Determination

The sample size can be determined for the Bernoulli, Location Scale Normal and the Location Normal models.

Bernoulli model: ${\displaystyle n\geq {{\bar {x}}(1-{\bar {x}})}{{{z_{{1+\gamma } \over {2}}}^{2}} \over {\delta ^{2}}}}$

Location Scale Normal model: ${\displaystyle n\geq {s^{2}}{{({t_{{1+\gamma } \over {2}}(n-1))}^{2}} \over {\delta ^{2}}}}$

Location Normal model: ${\displaystyle n\geq {\sigma ^{2}}{{{z_{{1+\gamma } \over {2}}}^{2}} \over {\delta ^{2}}}}$