SOLUTION: Kori is analyzing a normal data distribution, but the data provided is incomplete. Kori knows that the mean of the data is 120, and that 84% of the data values are less than 130. F
Algebra ->
Equations
-> SOLUTION: Kori is analyzing a normal data distribution, but the data provided is incomplete. Kori knows that the mean of the data is 120, and that 84% of the data values are less than 130. F
Log On
Question 1117731: Kori is analyzing a normal data distribution, but the data provided is incomplete. Kori knows that the mean of the data is 120, and that 84% of the data values are less than 130. Find the standard deviation for this data set. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Kori is analyzing a normal data distribution, but the data provided is incomplete. Kori knows that the mean of the data is 120, and that 84% of the data values are less than 130. Find the standard deviation for this data set.
-------
z = (x-u)/sigma
-----
Find the z-value.
z = invNorm(0.84) = 0.9945
------
Equation:
0.9945 = (130-124)/s
---
std = 6/0.9945 = 6.0334
----
Cheers,
Stan H.
-------
(