Exercise 1. According to the National Automobile Dealers Association, the mean price for used cars is $10,192. Using the sample data from UsedCars, complete the following tasks:

1. Formulate the hypotheses that can be used to determine whether a difference exists in the mean price for used cars at the dealership. Identify Ho and Ha.
2. Identify the appropriate test to conduct (z or t) and find the test statistic. Explain.
3. Conduct the test. What is the p-value?
4. At ? = .05, what is our conclusion? Interpret your results

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