Each car in a sample of seven cars was tested for​ nitrogen-oxide

Each car in a sample of seven cars was tested for​ nitrogen-oxide

emissions​ (in grams per​ mile), and the following results were obtained.
0.05​, 0.12, 0.17, 0.16​, 0.15, 0.05​, 0.16

__ < μ < __?

​(Round to the nearest thousandth as​ needed.)
b.  One agency requires that​ nitrogen-oxide emissions be less than 0.158

0.158 ​gram/ mile. Someone claims that​ nitrogen-oxide emissions have a mean equal to 0.158

0.158 ​gram/mile. Does the confidence interval suggest that this claim is not​ valid?

Yes

No

Hi there! Click one of our representatives below and we will get back to you as soon as possible.

Chat with us on WhatsApp