SOLUTION: what is the proportion of the total area under the normal curve within plus and minus 2 standard deviations?

Algebra ->  Probability-and-statistics -> SOLUTION: what is the proportion of the total area under the normal curve within plus and minus 2 standard deviations?       Log On


   

Question 296753: what is the proportion of the total area under the normal curve within plus and minus 2 standard deviations?
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
what is the proportion of the total area under the normal curve within plus and minus 2 standard deviations? 

 

 
There is 47.5% of the area between the short black line at z=-2 
and the y-axis, and there is also 47.5% of the area between
the y-axis and the short black line at z=2.  That's a total
of 95%.

Edwin