Question: A Human Resources manager at Metal Technologies studied the overtime hours of welders. A sample of 15 welders showed the following number of overtime hours

A Human Resources manager at Metal Technologies studied the overtime hours of welders. A sample of 15 welders showed the following number of overtime hours worked last month.

13 13 12 12 15 15 13 12 12

(a) Compute the arithmetic mean

(b) Indicate whether it is a statistic or a parameter.

13 13 12 12 15 15 13 12 12

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