Question: 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

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. Trucks Cars Vans 12 8 5 9 5 10 10 14 4 12 7 12 The mean square for treatments (MSTR) for these observations is Multiple Choice O 20 O 975 O 47 O 12.5
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