Question

The daily income of bank auditors in SSS Commercial Bank is normally distributed with a mean of 675 and a standard deviation of 45. What is the z-value for the income x of a bank auditor who earns 700 daily?

Answer 1

Population mean $\mu=675$

Standard deviation $\sigma=45$

Z value for $X=700$

$Z=\dfrac{X-\mu}{\sigma}$

$Z=\dfrac{700-675}{45}$

$Z=0.5556$