What is the z-score of sample X, if n=36,mu=8,St Dev=9,and mu_X=11.2

Tara Mayer

Tara Mayer

Answered question

2022-10-29

What is the z-score of sample X, if n = 36 ,   μ = 8 ,   St.Dev = 9 ,   μ X = 11.2?

Answer & Explanation

indivisast7

indivisast7

Beginner2022-10-30Added 13 answers

Given
n = 36 μ = 8 St.Dev = 9 μ X = 11.2
Find the Standard Error
S E = σ n = 9 36 = 1.5
Find the z-score
z = μ μ X S E = 8 11.2 1.5 = 2.13

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