Table D.

Z TEST.

n1 = 77, P1${\displaystyle =\frac{5}{77}=0.065}$, q1 = 0.935

n2 = 77, P2 = ${\displaystyle \frac{1}{77}=0.013}$, q2 = 0.987

${\displaystyle \mathrm{Z}=\frac{\mathrm{p}1-\mathrm{p}2}{\sqrt{\frac{\mathrm{p}1\mathrm{q}1}{\mathrm{n}1}+\frac{\mathrm{p}2\mathrm{q}2}{\mathrm{n}2}}}}$

${\displaystyle \mathrm{Z}=\frac{0.065-0.013}{\sqrt{\frac{\left(0.065\right)\left(0.935\right)}{77}+\frac{\left(0.013\right)\left(0.937\right)}{77}}}}$

${\displaystyle =\frac{0.052}{\sqrt{\frac{0.061}{77}+\frac{0.013}{77}}}}$

${\displaystyle =\frac{0.052}{\sqrt{0.00079+0.00017}}}$

${\displaystyle =\frac{0.052}{\sqrt{0.00000013}}}$

${\displaystyle =\frac{0.052}{0.000366}}$

= 142.076