# bus 215 assignment

Course Project 2

Due Date: June 29, 2016

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).
1. Find the sample mean with 90% confidence interval.

2. 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?
Find answer using the following steps :

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.

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

—————–

These questions should be answered in a plain language, executive level report that is supported with a technical level appendix that includes the original data set, all manipulations and calculations of those data in ExcelÂ®, all relevant statistical software output, and a running narrative explaining the methodology used, the assumptions made, and the interpretation of each analysis performed.  Use only the information provided and your business and or common sense to complete this project; do not make things up or engage in creative writing.

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