An experiment was performed to investigate whether there is deterioration in the performance of a car if it uses unleaded fuel rather than leaded fuel. Ten cars filled with leaded fuel were run on the same route using the same driver, and the performance of each car in miles per gallon was noted. The same cars were filled with unleaded fuel and run on the same route by the same driver.

The results of the experiment are presented as follows:  Compare the performances at α=0.05 by (1) classical method and (2)

p-value approach if you have access to computer software (EXCEL, MINITAB)

to obtain the p-value.

Transcribed Image Text:

Cars Leaded 1 2 3 4 5 6 7 8 9 10 37.6 39.4 39.5 37.1 35.3 35.9 36.3 38.4 37.3 39.1 Unleaded 36.8 40.0 38.2 36.4 36.0 35.4 36.5 38.0 36.4 40.1