What is the z-score of sample X, if #n = 36, mu= 8, St. Dev. =9, and mu_X =11.2#?
1 Answer
Jun 27, 2016
#z=-2.13#
Explanation:
Given -
#n=36#
#mu=8#
#sigma=9#
#mu_x=11.2#
Find the Standard Error
SE
Find the
#z=(mu-mu_x)/(SE)=(8-11.2)/1.5=(-3.2)/1.5=-2.13#