Benjamin records the speeds of vehicles moving past their house. The speed limit is 40 km/h. The mean and standard deviation of 133 readings was x = 37.6 km/h and s = 5.7 km/h. Assuming the data is normally distributed, what is the percent chance that a person is travelling faster than 31.9 km/h? Use this Standard Normal Distribution curve to help answer the question: -3.5 Answer: 1.7% 0.1% 0.5% 4.4% 9.2% 15% 19.1% 19.1% -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 15% Standard Deviation () 9.2% 1.7% 0.5% 0.1% 4.4% 1.0 1.5 2.0 2.5 3.0 3.5