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Mathematics 7 Online
OpenStudy (anonymous):

Statistics: How do you find standard deviation of sample in this kind of problem?!?

OpenStudy (anonymous):

OpenStudy (anonymous):

Or can this be solved by another method in this case?

OpenStudy (zarkon):

looks like they are asking for a 2-sample proportion test.

OpenStudy (anonymous):

@zarkon thanks, I will try that

OpenStudy (anonymous):

Yeah got it this way

OpenStudy (anonymous):

Thank you @Zarkon

OpenStudy (zarkon):

good :)

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