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1 September, 23:31

The average age of a football player in a league is 27.

The age of 12 football players in the league are

25, 23, 26, 29, 37, 23, 32, 29, 25, 22, 31, and 34.

What's the sample mean and population mean?

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  1. 1 September, 23:48
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    The population mean was given and is 27 years.

    The sample mean is the arithmetic mean of the 12 ages given above. Add them up and divide the sum by 12 to get the sample mean.
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