The following cumulative frequency and the cumulative relative frequency polygon for the distribution of hourly wages of a sample of certified welders in the Atlanta, Georgia, area is shown in the graph. 100 30 75 Frequency 20 50 Percent 10 25 10 15 20 25 30 Hourly Wage S Required: a. How many welders were studied? Number of wolders b. What is the class interval? Class IntervalThe following cumulative frequency and the cumulative relative frequency polygon for the distribution of hourly wages of a sample of certified welders in the Atlanta, Georgia, area is shown in the graph. 100 30 75 Frequency 20 50 Percent 10 25 10 15 20 25 30 Hourly Wage S Required: a. How many welders were studied? Number of wolders b. What is the class interval? Class Intervalc. About how many welders earn less than $11.00 per hour? Number of welders d. About 75% of the welders make less than what amount? Amount e. Twenty of the welders studied made less than what amount? Amount f. What percent of the welders make less than $10.00 per hour? Percent of weldersc. About how many welders earn less than $11.00 per hour? Number of welders d. About 75% of the welders make less than what amount? Amount e. Twenty of the welders studied made less than what amount? Amount f. What percent of the welders make less than $10.00 per hour? Percent of welders