What is the z-score of sample X, if #n = 196, mu= 52, St. Dev. =28, and mu_X =49#?

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Answer 1 · 2016-11-19T18:51:49

The z-score is #=-3/2#

The z-score is #(barx-mu)/(sigma/sqrtn)#

Here, #barx=49#

#mu=52#

#sigma=28#

#n=196#

The z-score is

#=(49-52)/(28/sqrt196)#

#=-3/(28/14)=-3/2#