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As a follow-up to a report on gas consumption, a consumer group conducted a study of SUV owners to estimate the mean mileage for their
As a follow-up to a report on gas consumption, a consumer group conducted a study of SUV owners to estimate the mean mileage for their vehicles. A simple random sample of 88 SUV owners was selected, and the owners were asked to report their highway mileage. The results that were summarized from the sample data were x = 19.8 mpg and s = 5.4 mpg. Based on these sample data, compute and interpret a 99% confidence interval estimate for the mean highway mileage for SUVs. The 99% confidence interval is mpg -mpg. (Round to one decimal place as needed. Use ascending order.) Interpret this interval. Choose the correct answer below. A. One can conclude with 99% confidence that the sample mean highway mpg for SUVs is in this range. O B. One can conclude with 99% confidence that the true mean highway mpg for SUVs is in this range. O C. One can conclude that the true mean highway mpg for SUVs will fall in this range 99% of the time. O D. There is a 0.99 probability that the true mean highway mpg for SUVs falls in this range
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