Dirty air: The federal government has enacted maximum allowable standards for air pollutants such as ozone. LetXbe the number of days per year that the level of air pollution exceeds the standard in a certain city. The probability distribution oins given by x'O 123 4 P (x) 0.35 0.40 0.18 0.04 0.03 Send data to Excel Part 1 of4 (a) Find P(3). mail Part2 of4 (b) Find P(3 or fewer). P(3 or fewer) :l 0.97J Part:2/4 Part3 of4 (c) Find the probability that the standard is exceeded on at least two days. The probability that the standard is exceeded on at least two days is l l