Although there is a big difference in costs between two electric vehicles, model 1 and model 2, is there a difference in the range of miles for these vehicles between charges? Suppose that the results of driving tests are as follows. Standard Deviation Sample Size Car Mean model 1 231.2 12.4 40 model 2 235.3 17.3 40 (a) Calculate a point estimate for the difference in the average ranges (in miles) between charges for a model 1 car and a model 2 car. (Use umodel 1- Hmodel 2:) -4.1 mi What is the 95% margin of error (in miles) for the point estimate you found? (Round your answer to three decimal places.) 6.596 mi (b) Find a 99% confidence interval estimate for the difference in the average ranges (in miles) between charges for these electric models. (Use umodel 1- Hmodel 2. your answers to two decimal places.) Round |-12.99 X mi to 4.79 X mi Could you conclude that there is a significant difference in the average ranges?
Although there is a big difference in costs between two electric vehicles, model 1 and model 2, is there a difference in the range of miles for these vehicles between charges? Suppose that the results of driving tests are as follows. Standard Deviation Sample Size Car Mean model 1 231.2 12.4 40 model 2 235.3 17.3 40 (a) Calculate a point estimate for the difference in the average ranges (in miles) between charges for a model 1 car and a model 2 car. (Use umodel 1- Hmodel 2:) -4.1 mi What is the 95% margin of error (in miles) for the point estimate you found? (Round your answer to three decimal places.) 6.596 mi (b) Find a 99% confidence interval estimate for the difference in the average ranges (in miles) between charges for these electric models. (Use umodel 1- Hmodel 2. your answers to two decimal places.) Round |-12.99 X mi to 4.79 X mi Could you conclude that there is a significant difference in the average ranges?
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![Although there is a big difference in costs between two electric vehicles, model 1 and model 2, is there a difference in the range of miles for these vehicles between charges?
Suppose that the results of driving tests are as follows.
Standard
Deviation
Sample
Size
Car
Mean
model 1
231.2
12.4
40
model 2
235.3
17.3
40
(a) Calculate a point estimate for the difference in the average ranges (in miles) between charges for a model 1 car and a model 2 car. (Use umodel 1- Hmodel 2:)
-4.1
mi
What is the 95% margin of error (in miles) for the point estimate you found? (Round your answer to three decimal places.)
6.596
mi
(b) Find a 99% confidence interval estimate for the difference in the average ranges (in miles) between charges for these electric models. (Use umodel 1- Hmodel 2.
your answers to two decimal places.)
Round
|-12.99
X mi to 4.79
X mi
Could you conclude that there is a significant difference in the average ranges?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F44ad3043-b94e-4ebe-a81d-57d5ee926705%2Fd72a8355-e9f0-4f66-b2a7-86e054352dd0%2Fqqxg7fd.png&w=3840&q=75)
Transcribed Image Text:Although there is a big difference in costs between two electric vehicles, model 1 and model 2, is there a difference in the range of miles for these vehicles between charges?
Suppose that the results of driving tests are as follows.
Standard
Deviation
Sample
Size
Car
Mean
model 1
231.2
12.4
40
model 2
235.3
17.3
40
(a) Calculate a point estimate for the difference in the average ranges (in miles) between charges for a model 1 car and a model 2 car. (Use umodel 1- Hmodel 2:)
-4.1
mi
What is the 95% margin of error (in miles) for the point estimate you found? (Round your answer to three decimal places.)
6.596
mi
(b) Find a 99% confidence interval estimate for the difference in the average ranges (in miles) between charges for these electric models. (Use umodel 1- Hmodel 2.
your answers to two decimal places.)
Round
|-12.99
X mi to 4.79
X mi
Could you conclude that there is a significant difference in the average ranges?
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