Congress Regulates Corporate Fuel Economy

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Congress Regulates Corporate Fuel Economy

and sets an annual gas mileage for cars. A company with a large fleet of cars hopes to meet the goal of 35.635.6 mpg or better for their fleet of cars. To see if the goal is being_ met, they check the gasoline usage for 3333 company trips chosen at_ random, finding a mean of 37.6037.60 mpg and a standard deviation of 3.423.42 mpg. Is this strong evidence that they have attained their fuel economy_ goal? Complete parts_ (a) through_ (f) below. Use 0.05 as the_ P-value cutoff level.
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ho : u =35.6 ha u > 35.6 the company uses a random_ sample, so one can assume the data are independent. If there are no_ outliers, and the data are_ unimodal, symmetric, and only mildly_ skewed, one can assume the data come from a Normal population s/33 If the average fuel economy is 35.635.6 _mpg, the chance of obtaining a sample mean of 37.6037.60 or more by natural sampling variation is 0.10.1_%. Reject the null hypothesis. There is strong evidence that the company is meeting their goal.
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