An environmentalist would like to compare air pollution levels in cities A and B. From each city 10 measurements are taken. For

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3 years ago

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An environmentalist would like to compare air pollution levels in cities A and B. From each city 10 measurements are taken. For

city A, the average of all measurements (where measurements are percentage of pollutants in the air) is 5 percent with sample standard deviation 1.5 percent. For city B the average of all 10 measurements is 5.4 percent with sample standard deviation 2 percent. Assume that for each city air pollution level at a random time and location follows a normal distribution, and nd a 90% confidence interval for difference between the true average air pollution levels of city A and city B.

Mathematics

1 answer:

tankabanditka [31] · Answer 1 · 2022-01-27T21:10:36+03:00

tankabanditka [31]3 years ago

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