[2D points] The Patterson Airport Commissions is considering the establishment of limitations on the extent of noise pollution around a local airport. At present time the noise level per jet takeoff in one neighborhood near the airport is approximately normally distributed with J? = l decibels and s = 6 decibels. [3U pts] a. What is the probability that a randomly selected jet will generate a noise level greater than 103 decibels? b. What is the probability that a randomly selected jet will generate a noise of exactly 100 densibels':I e. Suppose a regulation is passed that requires jet noise to be lower than IDS decibels, 93% of the time. Assuming the stande deviation remains the same, how much will the mean noise level need to be lowered to comply with the regulation