Please help with attached question:

23 In a large population of drivers the accident rate A of a randomly se- lected person varies from person to person according to a T(2, 10) ran- dom variable. If X [A = >] is the number of accidents a person with accident rate A incurs in a year, then assume X | [A = )] is a Poisson random variable with parameter A. If X represents the number of ac- cidents a randomly selected person has in a year, what are E(X ) and Var(X)