Mathematical Review - Earlham College

May 14, 2013 · Number of employees Years of service 8 2 2 6 3 10 Using the weighted mean, calculate the correct average. 4.46 29. Newspapers for Sale The average number of newspapers for sale in an airport newsstand is 12, and the standard deviation is 4. The average age of the pilots is 37 years, with a standard deviation of 6 years. ................
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