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mean of 32 and standard deviation of 6 years what percent is older than 38

Guest Apr 22, 2015

Best Answer 

 #4
avatar+90988 
+5

Thanks Alan,

I have added this calc to our "Reference Material" sticky thread. 

It is in the calculator section - there are other good statistic calcs there as well. 

I refer to this thread almost every day.  

It would be good if all answerers familiarized themselves with what is in there.        

Melody  Apr 23, 2015
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4+0 Answers

 #1
avatar+26322 
+5

Assuming the distribution is Normal (Gaussian) then the percentage is 15.87%

 

I used http://www.mathportal.org/calculators/statistics-calculator/normal-distribution-calculator.php to do this.

 

 n

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Alan  Apr 22, 2015
 #2
avatar+90988 
0

Nice pic Alan :)

Melody  Apr 23, 2015
 #3
avatar+26322 
+5

I took the picture from the site I referenced.  You can ask it "Show me an explanation" after it has done the calculation, and this will include the graph.

.

Alan  Apr 23, 2015
 #4
avatar+90988 
+5
Best Answer

Thanks Alan,

I have added this calc to our "Reference Material" sticky thread. 

It is in the calculator section - there are other good statistic calcs there as well. 

I refer to this thread almost every day.  

It would be good if all answerers familiarized themselves with what is in there.        

Melody  Apr 23, 2015

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