Determine the arithmetic mean

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Reference no: EM1337050

The Humans Relations Director at Ford began a study of the overtime hours in the Inspection Department. A sample of 15 workers showed they worked the following number of overtime hours last month:

13 13 12 15 7 15 5 12

6 7 12 10 9 13 12

I need to compute the arithmetic mean and indicate whether it is a statistic or parameter.

I really don't understand this at all. If I could get some help, I'd really appreciate it.

Reference no: EM1337050

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