Question

Given the mean 71.4 and sample standard deviation 11.5 what is the z-
score of a data with a value of 85?

Answer 1

Answer: 1.18

Step-by-step explanation:

Z = (x - mean) / standard deviation

Z = (85 - 71.4) / 11.5

Z = 13.6 / 11.5 = 1.18