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Discussion Starter #1
the cars were returned? In 2004, a small dealership leased 21 Chevrolet Impalas on 2-year leases. When the cars were returned
in 2006, the mileage was recorded (see below). Is the dealer’s mean significantly greater
than the national average of 30,000 miles for 2-year leased vehicles, using the 10 percent level of
significance? Mileage
40,060 24,960 14,310 17,370 44,740 44,550 20,250
33,380 24,270 41,740 58,630 35,830 25,750 28,910
25,090 43,380 23,940 43,510 53,680 31,810 36,7
 
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