In order to estimate the difference between the average Miles per Gallon of two different models of automobiles, samples are taken and the following information is collected. 
a.At 95% confidence develop an interval estimate for the difference between the average Miles per Gallon for the two models.
b.Is there conclusive evidence to indicate that one model gets a higher MPG than the other? Why or why not? Explain.
Definitions:
Cynical
Having a belief that people are motivated purely by self-interest; skeptical of the motives of others.
Empirical Approach
A method of acquiring knowledge based on observation, experimentation, and evidence rather than theories or pure logic.
Examine Assumptions
The process of critically questioning and evaluating the underlying beliefs or principles that are taken for granted in arguments, theories, or policies.
Observation
The action or process of observing something or someone carefully or in order to gain information.
Q22: Refer to Exhibit 7-2. The point estimate
Q25: What are the three ways that marketing
Q33: For a lower tail test, the p-value
Q67: In order not to violate the requirements
Q75: A regression analysis between sales (Y in
Q81: During the recent primary elections, the democratic
Q82: In a random sample of 144 observations,
Q90: Two independent random samples of annual starting
Q128: When developing an interval estimate for the
Q184: For testing the following hypothesis at