Problem 11
Engineering: Fuel Injection A new fuel injection system has been engineered for pickup trucks. The new system and the old system both produce about the same average miles per gallon. However, engineers question which system (old or new) will give better consistency in fuel consumption (miles per gallon) under a variety of driving conditions. A random sample of 31 trucks were fitted with the new fuel injection system and driven under different conditions. For these trucks, the sample variance of gasoline consumption was 58.4. Another random sample of 25 trucks were fitted with the old fuel injection system and driven under a variety of different conditions. For these trucks, the sample variance of gasoline consumption was 31.6. Test the claim that there is a difference in population variance of gasoline consumption for the two injection systems. Use a 5% level of significance. How could your test conclusion relate to the question regarding the consistency of fuel consumption for the two fuel injection systems?

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Elementary Statistics Notes Amanda Selly August 22, 2016 Statistics: is the practice of taking data and making inferences with that data Inferential Statistics: Ex. In general students Descriptive Statistics: who are in STAT 154 are taking 14.3 credit hours Ex: the average number of credits in STAT 154-02 Unsafe and difficult to is 14.3 rely on

The full step-by-step solution to problem: 11 from chapter: 11.4 was answered by , our top Statistics solution expert on 01/04/18, 09:09PM. This textbook survival guide was created for the textbook: Understandable Statistics, edition: 9. Understandable Statistics was written by and is associated to the ISBN: 9780618949922. This full solution covers the following key subjects: . This expansive textbook survival guide covers 57 chapters, and 994 solutions. Since the solution to 11 from 11.4 chapter was answered, more than 241 students have viewed the full step-by-step answer. The answer to “Engineering: Fuel Injection A new fuel injection system has been engineered for pickup trucks. The new system and the old system both produce about the same average miles per gallon. However, engineers question which system (old or new) will give better consistency in fuel consumption (miles per gallon) under a variety of driving conditions. A random sample of 31 trucks were fitted with the new fuel injection system and driven under different conditions. For these trucks, the sample variance of gasoline consumption was 58.4. Another random sample of 25 trucks were fitted with the old fuel injection system and driven under a variety of different conditions. For these trucks, the sample variance of gasoline consumption was 31.6. Test the claim that there is a difference in population variance of gasoline consumption for the two injection systems. Use a 5% level of significance. How could your test conclusion relate to the question regarding the consistency of fuel consumption for the two fuel injection systems?” is broken down into a number of easy to follow steps, and 163 words.