Answer to Question #304072 in Statistics and Probability for chie

Question

on a final examination in biology, the mean was 75 and the standard deviation was 12. determine the standard score of a student who received a score of 60 assuming that the scores are normally distributed.

Answer 1

Solution:

$$z=\dfrac{x-\mu}{\sigma}=\dfrac{60-75}{12}=-1.25$$