Question: Please help with these homework practice problems, thank you! The US Department of transportation provides the number of miles that residence of the 75 largest

Please help with these homework practice problems, thank you!

The US Department of transportation provides the number of miles that residence of the 75 largest metropolitan areas travel per day in a car. Suppose that for a simple random sample of 70 Buffalo residence the mean is 22.7 miles a day and a standard deviation is 8.9 miles a day, and for the independent simple random sample of 40 Boston resident the mean is 18.8 miles a day and a standard deviation is 7.8 miles a day.

a. What is the point estimate of the difference between the main number of miles that buffalo residents travel per day and the main number of miles that Boston residence travel per day?

b. What is the 95% confidence interval for the difference between the two population means? Use z-table.

Please help with these homework practice problems, thank you! The US Department

ce Assignment Score: 0.00% nment: 10.2 Practice Save Submit Assignment for Grading Exercise 10.12 (Self-Test) Algorithmic Question 3 of 3 tions Check My Work eBook H Video The U.S. Department of Transportation provides the number of miles that residents of the 75 largest metropolitan areas travel per day in a car. Suppose that for a simple random sample of 70 Buffalo residents the mean is 22.7 miles a day and the standard deviation is 8.9 miles a day, and for an independent simple random sample of 40 Boston residents the mean is 18.8 miles a day and the standard deviation is 7.8 miles a day. Round your answers to one decimal place. a. What is the point estimate of the difference between the mean number of miles that Buffalo residents travel per day and the mean number of miles that Boston residents travel per day? b. What is the 95% confidence interval for the difference between the two population means? Use z-table. to Check My Work Icon Key Exercise 10.12 (Self-Test) Algorithmic Question 3 of 3

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