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Congress regulates corporate fuel economy and sets an annual gas mileage for cars. Aoompany with a large fleet of cars hopes to meet the goal of 37.2 mpg orbetter for their eet of cars. To see it the goal is being met, they check the gasoline usage for 42 company trips chosen at random, nding a mean at 40.20 mpg and a standard deviation of 6.72 mpg. Is this strong evidence that they have attained theirfuel economy goal? Complete parts (a) through (0 below. Use 0.05 as the Pvalue cutofl level. (Em mildly skewed, one can assume the data come from a Normal population I C The company uses a random sample. so one can assume the data are dependent. if the sample size is less than 10% of the population, and there are at least 10 successes and 10 failures, one can assume the population follows a Student's t-model. ' Dr The company uses a random sample, so one can assume the data are independent If the sample silo is less than 10% of the population, and there are at least 10 successes and 10 fallures, one can assume the population follows a Student's t-model. c) Describe the sampling distribution model of mean fuel economy tor samples like this Choose the correct answer below 0A 9372 \"4 ' we ' {15 B. '"1 O 37.21% '2 0c e.72+~} ~ ' 372/447 6.7244 37.2 1 SE (9) Z , , 'W