Question

What is the z-score of sample X, if `n = 36, mu= 5, St. Dev. =9, and mu_X =6`?

Answer 1

`z=2/3~=0.6666666`

Explanation:

The given data are `n=36` and `mu=5` and `sigma=9` and `mu_x=6`

The formula

`z=(mu_x-mu)/((sigma/sqrtn))`

`z=(6-5)/((9/sqrt(36)))`

`z=1/((9/6))`

`z=2/3`

God bless....I hope the explanation is useful.