This is the user page for Paul Ripke (aka stix or stixpjr), who is a SRE and lives in Sydney and Wollongong, Australia. See his home page for more info.

This user comes from Wollongong.

testing equations

${\displaystyle z={\frac {{\overline {x_{1}}}-{\overline {x_{2}}}}{s_{{\overline {x_{1}}}-{\overline {x_{2}}}}}}={\frac {{\overline {x_{1}}}-{\overline {x_{2}}}}{\sqrt {{\frac {s_{1}^{2}}{z_{1}}}+{\frac {s_{2}^{2}}{z_{2}}}}}}={\frac {3.1-3.15}{\sqrt {{\frac {1.265^{2}}{204}}+{\frac {1.35^{2}}{196}}}}}=-0.382}$