SOLUTION: A distribution of values is normal with a mean of 205.9 and a standard deviation of 51.9. Find P15, which is the score separating the bottom 15% from the top 85%. Enter you

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Question 1180198: A distribution of values is normal with a mean of 205.9 and a standard deviation of 51.9.
Find P15, which is the score separating the bottom 15% from the top 85%.

Enter your answer as a number accurate to 4 decimal places.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
using inv norm function P15=a z=-1.0364
z=(x-mean)/sd
-1.0364=(x-205.9)/51.9
so -53.7892=x-205.9
x=152.1108 minutes