Question
In 2008, a small dealership leased 21 Suburu Outbacks on 2-year leases. When the cars were returned in 2010, the mileage was recorded (see below).
In 2008, a small dealership leased 21 Suburu Outbacks on 2-year leases. When the cars were returned in 2010, 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 5 percent level of significance?
Data:
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 | 36,780 |
Find answer using the following steps
Step 1: State the Hypotheses
Step 2: Specify the Decision Rule
Step 3: Calculate the Test Statistic
Step 4: Make the Decision
Calculate p-value also and give interpretations.
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