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gillie11
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for a normal distribution, find the z-score location that divides the distribution as follows:

ASeparate the top 20% from the rest
BSeparate the top 60% from the rest
CSeparate the middle 70% from the rest.

Verified Answer :

Aseperate the top 20% from the rest
that is the only possible asnwer

20 over here               60 over here            and 70 over here
                                    

this is the first
20% of the 
data

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