STEP - BY - STEP EXPLANATION
What to find?
The z- score of 72
Given:
mean (μ) = 65
standard deviation (σ) = 13
x = 72
Step 1
Recall the z- score formula.
[tex]z=\frac{x-\mu}{\sigma}[/tex]Step 2
Substitute the values into the formula and simplify.
[tex]Z=\frac{72-65}{13}[/tex][tex]=0.54[/tex]ANSWER
0.54
