Question

On a standard measure of hearing ability the mean is 300 and the standard deviation is 20. What is the z-score for a person who scores 310?

Answer 1

You can find the z-score using the formula
`z = (x-u)/sigma`

Hence for x=310 ,u=300, sigma=20 we have that

`z=(310-300)/20=10/20=1/2`