60 10% 45 75% 30 50% 15 25% 10 15 20 25 30 Hourly Wages ($) a) The number of workers were studied is b) The width of the class interval is c) The number of workers that earn less than $10 is d) About 75% of the workers make less than $ e) 15 of the workers studied made less than $ f) The percentage of the workers that make less than $15 Is 96