SOLUTION: If X~N (8,4),what is the 80th percentile

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Question 1169642: If X~N (8,4),what is the 80th percentile
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
the mean is 8 and the sd is 2, sqrt (V)
this would be 0.8416 sd more than the mean or 9.68
z=(x-mean)/sd