2. (10 points) The City of Irvine is studying whether longer green light cycles (a longer green light cycle means that a trafc signal at an intersection will be green longer than those with shorter cycles) can help curb the number of accidents at busy intersections during peak hours. Data were collected from 10 different intersections studied at random, documenting the amount of time each intersection had a green light and the number of accidents recorded last month. Green 11gl1t cycle m Number of accidents Intersection :seconds: 45 3O 60 90 45 30 30 45 60 75 gweeqaxunnwn.' muaxooowwowa a) (4 points) Calculate the covariance between green light cycle length and the number of accidents reported at each studied intersection last month. b) (4 points) What is the correlation between green light cycle length and the number of accidents? c) (2 points) Describe the correlation found in part (b). What conclusions can be made from your calculations