Mathematics, 15.04.2020 01:24, JDKozlova

Based on data collected over the years from a variety of engines, it seems reasonable to assume that all emission levels for that type of the vehicles are roughly bell shaped distributed with spread equal to 3. Ten engines are manufactured for testing purposes and the emission level of each is determined. The data result in an average of 22 parts per million. Is it an unusual measure to get for properly working engines? Report the value of the test statistic rounded to two decimals.

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Based on data collected over the years from a variety of engines, it seems reasonable to assume that...