The following data represent the monthly phone​ use, in​
minutes, of a customer enrolled in a...
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The following data represent the monthly phone​ use, in​minutes, of a customer enrolled in a fraud prevention program forthe past 20 months. The phone company decides to use the upperfence as the cutoff point for the number of minutes at which thecustomer should be contacted. What is the cutoff​ point?
Upper fence Q3 15 IQR so The first quartile or lower quartile or 25th percentile is the median of the bottom half of the numbers So to find the first quartile we need to place the numbers in value
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