Carbon monoxide (CO) emissions for a certain kind of car vary with mean 3.338 g/mi and standard deviation 0.7 g/mi. A company has 60 of these cars in its fleet. Let y represent the mean CO level for the company's fleet. a) What's the approximate model for the distribution of y? Explain. b) Estimate the probability that y is between 3.4 and 3.5 g/mi. c) There is only a 5% chance that the fleet's mean CO level is greater than what value? a) Select the correct choice below and, if necessary, fill in the answer boxes within your choice. O A. A Poisson model with mean number of successes (Round to three decimal places as needed.) O B. A Binomial model with trials and a probability of success of (Round to three decimal places as needed.) O C. A Normal model with mean and standard deviation (Round to three decimal places as needed.) O D. There is no model that fits this distribution. b) P(3.4 )=0.05 (Round to one decimal place as needed.)