In 2017, the entire fleet of light‑duty vehicles sold in the United States by each manufacturer must emit an average of no more than 91 milligrams per mile (mg/mi) of nitrogen oxides (NOX) and...

In 2017, the entire fleet of light‑duty vehicles sold in the United States by each manufacturer must emit an average of no more than 91 milligrams per mile (mg/mi) of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) over the useful life (150,000 miles of driving) of the vehicle. NOX + NMOG emissions over the useful life for one car model vary Normally with mean 86 mg/mi and standard deviation 5 mg/mi.

What is the probability that a single car of this model emits more than 91 mg/mi of NOX + NMOG? Give your answer to four decimal places.