Question: Carbon monoxide (CO) emissions for a certain kind of car vary with mean \(\mu \) = 2.5 g/mi and standard deviation \(\sigma \) = 0.6 g/mi. A company has 80 of these cars in its fleet. Let y represent the mean CO level for the company's fleet. Estimate the probability that y is between 2.6 and 2.7 g/mi.