Find the mean co level for the company fleet

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Question: Pollution. Carbon monoxide (CO) emissions for a certain kind of car vary with mean 2.9 g/mi and standard deviation 0.4 g/mi. A company has 80 of these cars in its fleet. Let represent the mean CO level for the company's fleet.

a) What's the approximate model for the distribution of ? Explain.

b) Estimate the probability that is between 3.0 and 3.1 g/mi.

c) There is only a 5% chance that the fleet's mean CO level is greater than what value?

Reference no: EM131648875

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