Each car in a sample of seven cars was tested fornitrogen-oxide emissions(in grams permile), and the following results were obtained.

0.08, 0.11, 0.19, 0.16, 0.15, 0.06, 0.16

a. Assuming that this sample is representative of cars inuse, construct a95% confidence interval estimate of the mean amount ofnitrogen-oxide emissions for all cars.

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(Round to the nearest thousandth asneeded.)