SOLUTION: Please show the formula(s) for question given.
Given a normal distribution with a mean of 85 and a sample standard deviation of 15, how much of the data should be in the interval
Algebra ->
Probability-and-statistics
-> SOLUTION: Please show the formula(s) for question given.
Given a normal distribution with a mean of 85 and a sample standard deviation of 15, how much of the data should be in the interval
Log On
Question 436238: Please show the formula(s) for question given.
Given a normal distribution with a mean of 85 and a sample standard deviation of 15, how much of the data should be in the interval between 55 and 115? Thank you. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Please show the formula(s) for question given.
Given a normal distribution with a mean of 85 and a sample standard deviation of 15, how much of the data should be in the interval between 55 and 115? Thank you.
-------------------------------
z(55) = (55-85)/15 = -30/15 = -2
---
z(115) = (115-85)/15 = 30/15 = 2
----
-----
P(85< x < 115) = P(-2< z < 2) = 0.9545
=============================================
Cheers,
Stan H.
===============
(