Measures of the Spread of the Data · Example 3

Two students, John and Ali, from different high schools, wanted to find out who had the highest GPA when compared to his school. Which student had the highest GPA when compared to his school?
$$\begin{array}{cccc}\text{Student}& \text{GPA}& \text{School Mean GPA}& \text{School Standard Deviation}\\ \text{John}& \text{2.85}& \text{3.0}& \text{0.7}\\ \text{Ali}& \text{77}& \text{80}& \text{10}\end{array}$$

OpenStax, Introductory Statistics 2e · §2.7 Measures of the Spread of the Data · Example 3