Question

the class average on a math test was 84.5 and the standard deviation was 4.4. Find the z-score for a test score of 94

Answer 1

The z-score will be given by:
z=(x-μ)/σ
given that:
x=94
μ=mean=84.5
σ=standard deviation=4.4
thus
z=(94-84.5)/4.4
z=2.1591