Suppose that the speed at which cars go on the freeway is normally distributed with mean 73 mph and standard deviation 8 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. a. What is the distribution of X? (Enter the mean and SD) N(: 73 H 8 :) b. If one car is randomly chosen, find the probability that it is traveling more than 70 mph. .646 J c. If one of the cars is randomly chosen, find the probability that it is traveling between 76 and 79 mph. .1272 J d. 69% of all cars travel at least how fast on the freeway? mph