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A sample of college students was asked how much they spent monthly on cell phone plans....

A sample of college students was asked how much they spent monthly on cell phone plans. Approximate the mean for the cost. Monthly cell phone plan cost​ ($) Number of students ​

10.00-19.99 7

​20.00-29.99 20 ​

30.00-39.99 22

​40.00-49.99 18 ​

50.00-59.99 7

math   Statistics-And-Probability   
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