Question

Each car in a sample of seven cars was tested for​ nitrogen-oxide emissions​ (in grams per​...

Each car in a sample of seven cars was tested for​ nitrogen-oxide emissions​ (in grams per​ mile), and the following results were obtained.

0.050.05​,

0.110.11​,

0.170.17​,

0.150.15​,

0.140.14​,

0.070.07​,

0.150.15

  

a. Assuming that this sample is representative of cars in​ use, construct a​ 95% confidence interval estimate of the mean amount of​ nitrogen-oxide emissions for all cars.

​(Round to the nearest thousandth as​ needed.)

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