SOLUTION: The time taken for a computer link to be made between the terminal in an executive's office and the computer at a remote factory site has a Normal distribution with a mean of 15 se

Algebra ->  Probability-and-statistics -> SOLUTION: The time taken for a computer link to be made between the terminal in an executive's office and the computer at a remote factory site has a Normal distribution with a mean of 15 se      Log On


   

Question 460843: The time taken for a computer link to be made between the terminal in an executive's office and the computer at a remote factory site has a Normal distribution with a mean of 15 seconds and a standard deviation of 3 seconds. On 90% of the occasions, the computer link is made in less than ___
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The time taken for a computer link to be made between the terminal in an executive's office and the computer at a remote factory site has a Normal distribution with a mean of 15 seconds and a standard deviation of 3 seconds. On 90% of the occasions, the computer link is made in less than ___
--------------
Find the z-value with a 90% left tail:
invNorm(0.90) = 1.2816
-----
Find the corresponding x-value:
x = zs+u
x = 1.2816*3 + 15 = 18.84 seconds
================
Cheers,
Stan H.