The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean
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Question:
The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean 0.9 grams per mile (g/mi) and standard deviation 0.15 g/mi. A company has 80 cars of this model in its fleet.We are interested in the probability that the average NOX level is between 0.875 and 0.946 g/mi.
z1= (round your answer to two decimal places)
z2= (round your answer to two decimal places)
P(0.875< x<0.946) =
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