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:
Chyme
The fluid mixture of partially digested food and digestive secretions that is formed in the stomach and intestine during digestion.
Gastric Juices
A mixture of mucus, hydrochloric acid, and digestive enzymes produced by the stomach lining to aid in the digestion of food.
Bolus
A mass of chewed food at the moment of swallowing.
Stomach Wall
The layers of muscle and tissue that encase the stomach, responsible for the mechanical and chemical breakdown of food.
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