I need help with this:

((1) Saturn Valley police station in south London decides to collect information concerning the ages of people involved in road accidents and the number of accidents in a certain week in November. The results are tabulated below Age of Number person of involved accidents 5x) 12! 17 24 21 26 25 23 27 27 31 20 35 16 39 12 This means that 26 people aged 21 were involved in an accident, 20 people aged 31were involved in an accident. (i) Find the correlation coefcient. (ii) Find the equation of the regression line. (iii) Use the regression line to estimate the number of accidents involving people aged 19. (iv) If 18 accidents were reported involving people aged x, estimate x