What is the z-score of X, if n = 57, $mu= 35$ , SD =5, and X =13?

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Answer 1 · 2016-03-04T06:15:30

z-score is $-26.03$

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

As $mu=35$ , $sigma=5$ , $n=57$ and $x=13$

z-score is $(13-35)/(5/sqrt35)=((-22)*sqrt35)/5=-26.03$

What is the z-score of X, if n = 57, mu= 35mu= 35, SD =5, and X =13?