SOLUTION: A list of numbers have mean 7 and standard deviation 2.5. If x is a number in the list that is 2 standard deviation above mean then what is the value of x ? please explain the pro

Question 455421: A list of numbers have mean 7 and standard deviation 2.5. If x is a number in the list that is 2 standard deviation above mean then what is the value of x ?
please explain the procedure
thank you
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A list of numbers have mean 7 and standard deviation 2.5. If x is a number in the list that is 2 standard deviation above mean then what is the value of x ?
please explain the procedure
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Since z = (x-u)/s, x = zs+u
---
You have
u = 7
s = 2.5
z = 2
---
So, x = 2*2.5+7
x = 12
===================
Cheers,
Stan H.
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