Question 387977
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Hi
Using chart, calculator or Excel function NORMSINV(P)to find z-score: 
a. 20% in the tail on the left NORMSINV(.20) = -.8416
b. 40% in the tail on the right    NORMSINV(60) = .2533
c. 75% in the body on the left   NORMSINV(.75)= .6745
d. 99% in the body on the right  NORMSINV(.01)=  -2.3263