In a sample of 7 cars each car was tested for nitrogen-oxide emmissions (in grams per mile) and the following results were obtained. .07 .11 .17 .18 .17 .19 .16 Assuming that this sample is representative of the cars in use, construct a confidence interval estimate of the mean amount of nitrogen-oxide emmissions for all cars. If the EPA requires that nitrogen-oxide emmissions be less than .165 g/mi, can we safely say this requirement is being met?
A. what is the estimated mean
__________ g/mi < u < _______g/mi
B. can we safely conclude that the requirement that nitrogen-oxide emmissions be less than .165 g is being met?