How many welders were studied? [1]
b. What is the class interval? [1]
c. About how many welders earn less than $10.00 per hour? [1]
d. About 75% of the welders make less than what amount? [1]
e. Ten of the welders studied made less than what amount? [1]
f. What percent of the welders make less than $20.00 per hour?
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