(Solved): The following cumulative frequency and the cumulative relative frequency polygon for the distributi ...

The following cumulative frequency and the cumulative relative frequency polygon for the distribution of hourly wages of a sample of certified welders in the Atanta, Georgia, area is shown in the graph. a. How many welders were studied? b. What is the class interval? c. About how many welders earn less than \( \$ 11.00 \) per hour? d. About \( 25 \% \) of the welders make less than what amount? e. Twenty-five of the welders studied made less than what amount? f. What percent of the welders make less than \( \$ 23.00 \) per hour?