SOLUTION: Assume the random variable X is normally distributed with mean 50 and standard deviation 7. Find the 80th percentile.

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Question 1155868: Assume the random variable X is normally distributed with mean 50 and standard deviation 7. Find the 80th percentile.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
the 80th percentile is at z=+0.84
z=(x-mean)/sd
0.84=(x-50)/7
5.88=x-50
x=55.88