web2.0calc
 
+0  
 

 What proportion is greater than the mean by more than 120? Mean = 1200, STDEV=120

0
1180
1
avatar
The resistance of certain carbon resistors is normally distributed with a mean value of 1200 ohms and a standard deviation of 120 ohms. What proportion of the resistors have resistances that differ from the mean resistance by more than 120 ohms?
 Oct 22, 2017

1+0 Answers

 #1
avatar+129933 
+1

If 120 ohms represents 1 standard deviation,  68.2%  of the resistors fall within this

 

So....100 - 68.2  = 31.8%  of the resistors differ from the mean by more than 120 ohms  

 

 

cool cool cool 

 Oct 22, 2017
edited by CPhill  Oct 22, 2017

0 Online Users

Top Users

avatar+129933 CPhill moderator
avatar+37156 ElectricPavlov
avatar+15000 asinus moderator
avatar+3146 admin administrator
avatar+2511 GingerAle
avatar+2499 Solveit
avatar+1938 NotThatSmart
avatar+1770 bader
avatar+1573 parmen
avatar+1520 blackpanther
avatar+1489 kittykat

Sticky Topics