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

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Answer 1 · 2016-03-04T06:20:27

Z-score is $-0.833$

z-score of variable $x$ with mean $mu$ , and standard deviation $sigma$ is given by $(x-mu)/(sigma/sqrtn)$

As $mu=60$ , $sigma=12$ , $n=25$ and $x=58$

z-score is $(58-60)/(12/sqrt25)=((-2)*5)/12=-0.833$

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