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Mathematics 13 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

Directrix (directrix):

Have you calculated the mean and standard deviation of the set of numbers?

OpenStudy (kropot72):

@KeemoD143 Are you allowed to use a calculator with statistical functions?

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