SOLUTION: A researcher is investigating which of the two newly developed automobile engine oil is better at prolonging the life of an engine. Since there are a variety of automobil engines,

Question 377315: A researcher is investigating which of the two newly developed automobile engine oil is better at prolonging the life of an engine. Since there are a variety of automobil engines, 20 different engine types were randomly selected and were tested using each of the two engine oils. The number of hours of continuous use before engine breakdown was recorded for each engine oil. Based on the information provided, what type of analysis will yield the most useful information?
A. Independent samples comparison of population proportions.
B. Independent samples comparison of population means.
C. Matched pairs comparison of population proportions.
D. Matched pairs comparison of population means.

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
D.Matched pairs comparison of population means.
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