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A sample of college students was asked how much they spent monthly on cell phone plans. Approximate the standard deviation for the cost. Monthly cell

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A sample of college students was asked how much they spent monthly on cell phone plans. Approximate the standard deviation for the cost. Monthly cell phone plan cost ($) Number of students 10.00-19.99 9 20.00-29.99 12 30.00-39.99 22 40.00-49.99 16 50.00-59.99 6 The sample standard deviation for the cost is $ . (Round to the nearest cent as needed.)

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