Explanation:
We are to convert the given data to a z-score
To do so, we will use the formula:
[tex]\begin{gathered} z=\frac{x-\mu}{\sigma} \\ \end{gathered}[/tex]
Where
[tex]\begin{gathered} x=observed\text{ value=80} \\ \mu=mean\text{ score=80} \\ \sigma=standard\text{ deviation=7} \end{gathered}[/tex]
Thus
[tex]\begin{gathered} z_{80}=\frac{80-80}{7}=\frac{0}{7}=0 \\ z_{80}=0 \end{gathered}[/tex]
The z-score is 0
