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Mathematics 7 Online
OpenStudy (anonymous):

Susan keeps track of the number of tickets sold for each play presented at The Community Theater. Within how many standard deviations from the mean do all the values fall? 135, 71, 69, 80, 158, 152, 161, 96, 122, 118, 87, 85

OpenStudy (anonymous):

this one is hard!

OpenStudy (goformit100):

No it's easy

OpenStudy (anonymous):

how so?

OpenStudy (goformit100):

@e.cociuba

OpenStudy (e.cociuba):

Ya??

OpenStudy (anonymous):

??

OpenStudy (anonymous):

The answers could be 3 4 5 or 2

OpenStudy (e.cociuba):

Its d within two standard deviations because .. when you calculate standard deviation for those number you get 36.35 and the mean is 116.1. all of those numbers are contained within 116.1 +or - 2(36.35)

OpenStudy (goformit100):

@e.cociuba Madam is correct

OpenStudy (e.cociuba):

Haha thanks! :)

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