Question

In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained: 0.17, 0.07, 0.06, 0.18, 0.08, 0.18, 0.15. Assuming that this sample is representative of the cars in use, construct a 98% confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars. If the EPA requires that nitrogen-oxide emissions be less than 0.165 g / mi, can we safely conclude that this requirement is being met? What is the confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars? g / mi < ? < g / mi (Round to three decimal places as needed.) Can we safely conclude that the requirement that nitrogen-oxide emissions be less than 0.165 g / mi is being met? A. Yes, we can definitely conclude that the requirement is met for all cars. B. Yes, because the confidence interval contains 0.165 g / mi. C. No, it is possible that the requirement is being met, but it is also very possible that the mean is not less than 0.165 g / mi. D. No, because the confidence interval does not contain 0.165 g / mi.

          In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained: 0.17, 0.07, 0.06, 0.18, 0.08, 0.18, 0.15. Assuming that this sample is representative of the cars in use, construct a 98% confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars. If the EPA requires that nitrogen-oxide emissions be less than 0.165 g / mi, can we safely conclude that this requirement is being met?

What is the confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars?
g / mi < ? < g / mi
(Round to three decimal places as needed.)

Can we safely conclude that the requirement that nitrogen-oxide emissions be less than 0.165 g / mi is being met?

A. Yes, we can definitely conclude that the requirement is met for all cars.
B. Yes, because the confidence interval contains 0.165 g / mi.
C. No, it is possible that the requirement is being met, but it is also very possible that the mean is not less than 0.165 g / mi.
D. No, because the confidence interval does not contain 0.165 g / mi.

In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained: 0.17, 0.07, 0.06, 0.18, 0.08, 0.18, 0.15. Assuming that this sample is representative of the cars in use, construct a 98% confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars. If the EPA requires that nitrogen-oxide emissions be less than 0.165 g / mi, can we safely conclude that this requirement is being met?

What is the confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars?
g / mi < ? < g / mi
(Round to three decimal places as needed.)

Can we safely conclude that the requirement that nitrogen-oxide emissions be less than 0.165 g / mi is being met?

A. Yes, we can definitely conclude that the requirement is met for all cars.
B. Yes, because the confidence interval contains 0.165 g / mi.
C. No, it is possible that the requirement is being met, but it is also very possible that the mean is not less than 0.165 g / mi.
D. No, because the confidence interval does not contain 0.165 g / mi.

Added by Sean H.

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