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TO The following cumulative frequency polygon shows the hourly wages of a sample of certifled welders in the Atlanta, Georgia, area. 40 100 20 75

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TO The following cumulative frequency polygon shows the hourly wages of a sample of certifled welders in the Atlanta, Georgia, area. 40 100 20 75 Frequency 50 Percent eBook 20 25 10 Print 4 ferences 0 5 10 20 25 30 15 Hourly Wage 5 a. How many welders were studied? Number of welders 5 b. What is the class interval? Class interval

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