3. Suppose the speeds of cars on a street are normally distributed, with a mean of 76.4 kph and a standard deviation of 5.0 kph. Part A: To the nearest tenth of a percent, what is the probability that a car is going slower than 70 kph? (3 points)

Part B: To the nearest tenth of a percent, what is the probability that a car is going faster than 80 kph? (4 points)