Computers in some vehicles calculate various quantities related to performance. One of these is fuel efficiency expressed as miles per gallon (mpg). For one vehicle the mpg was recorded each time the gas tank was filled and the computer was then reset. In addition to the computer calculating mpg the driver also recorded the mpg by dividing the miles driven by the amount of gallons at fill-up. Using the data set mpgcomparison determine whether these calculations are different. A. State the HA and Ho. B. Describe the distribution using graphical methods. Can you analyze these data using methods based on normal distributions? Explain why or why not. C. Carry out a significance test using a confidence level of .05 and interpret the results.
