# What is the z-score of X, if n = 135, #mu= 74#, SD =3, and X =73?

##### 1 Answer

Jan 23, 2016

#### Answer:

#### Explanation:

The standard normal distribution simply converts the group of data in our frequency distribution such that the mean is 0 and the standard deviation is 1.

We can use:

but here we have instead SD = s;