The following chart shows the hourly wages of a sample of certifed welders: a. How mony welders were studied? b. What is the class interval? c. About how mony welders earn less than $25 per hour? d. About 50% of the welders make leas than what smount? (Round the final answer to 1 declirat place) e. Ten of the welders studied msde less than whst amount? 1. What percentege of the welcers make less than 320 per hour? The following chart shows the hourly wages of a sample of certifed welders: a. How mony welders were studied? b. What is the class interval? c. About how mony welders earn less than $25 per hour? d. About 50% of the welders make leas than what smount? (Round the final answer to 1 declirat place) e. Ten of the welders studied msde less than whst amount? 1. What percentege of the welcers make less than 320 per hour