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DarciXero DarciXero
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3 years ago
AutoTrader.com would like to test if a difference exists in the age of three different types of vehicles currently on the road--trucks, cars, and vans. The following data represent the age of a random sample of trucks, cars, and vans.



The grand mean for these observations is ________.

▸ 7.2

▸ 8.0

▸ 8.9

▸ 9.3
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Business Statistics

Business Statistics


Edition: 2nd
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decibuldecibul
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