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Statement of a problem № m1000

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The following cumulative frequency polygon shows the hourly wages of a sample of certified welders in the Atlanta, Georgia, area.  a. How many welders were studied? b. What is the class interval? c. About how many welders earn less than $10.00 per hour? d. About 75% of the welders make less than what amount? e. Ten of the welders studied made less than what amount? f. What percent of the welders make less than $20.00 perhour?




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