Question
a) confidence interval
b) interpret confidence interval in the context of the problem
Homework: Section 7.3 Score: 0 of 1 pt 7.3.16 Save 13 of 18(12 complete) HW Score: 62.5%, 11.25 of 18 pts Question Help In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained: 0.06, 0.17, 0.07, 0.09, 0.07, 0.12, 0.19. 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? ew What is the confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars? 0.0201 g/ mi
Explanation / Answer
we are 98% confident that the estimate of the mean amount of nitrogen oxide emission for all cars is between
0.020 and 0.394