Question

What is the z-score of X, if n = 25, μ=60, SD = 12, and X =58?

Answer 1

Answer:

Z-score is −0.833

Explanation:

z-score of variable x with mean μ, and standard deviation σ is given by x−μσ√n

As μ=60, σ=12, n=25 and x=58

z-score is 58−6012√25=(−2)⋅512=−0.833