# What is the z-score of X, if n = 72, #mu= 137#, SD =25, and X =13?

##### 1 Answer

Mar 4, 2016

#### Answer:

z-score is

#### Explanation:

z-score of variable

As

z-score is

Mar 4, 2016

z-score is

z-score of variable

As

z-score is