Leslie M.

asked • 11/01/13

Interpreting a bell curve questions

The bell curve I am given is exactly the same as the one shown on the website listed below...
 
http://www.csus.edu/indiv/b/brocks/Courses/EDS%20245/Handouts/Week%2010/Descrptive%20Statistics%20and%20the%20Normal%20Curve.pdf
 
 
 
Questions
A.)  About what percentage of the population falls within -1 and -2 standard deviations from the mean?  I am not sure if the answer would be 47.7% (34.13 + 13.59) or just 13.59% because the wording of the question is confusing me.
 
B.)  About what percentage of the population falls below -2 standard deviations from the mean?  I think the answer is about 2.3% (.13 + 2.14) but I am not fully sure.
 
Any help is greatly appreciated, thank you for you time!

1 Expert Answer

By:

Andre W. answered • 11/01/13

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