Answer:
2.5
Explanation:
The z-value for a normally distributed data is calculated using the formula below:
[tex]Z=\frac{X-\mu}{\sigma}[/tex]
Substitute the given values:
[tex]\begin{gathered} Z=\frac{24-20}{1.6} \\ =\frac{4}{1.6} \\ =2.5 \end{gathered}[/tex]
The z-value is 2.5
