Find average nox level for the fleet is greater

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Reference no: EM13129146

The level of nitrogen oxides (NOX) in the exhaust of cars of a particular model varies Normally with mean 0.2 g/ml and standard deviation of 0.05 g/ml. A company has 25 cars of this model in its fleet. What is the level L such that the probability that the average NOX level for the fleet is greater than L is only 0.01?

Reference no: EM13129146

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