13. [14 marks) For a driver with a given accident rate of r per year, the number of accidents in which he is involved in
Posted: Fri Dec 24, 2021 10:07 am
13. [14 marks) For a driver with a given accident rate of r per year, the number of accidents in which he is involved in a year has a Poisson distribution with mean r. The accident rate r of a randomly chosen driver follows a distribution with probability density function 2er (2)al 1.) r>0, a>0, 2>0. r(a) Let X be the number of accidents in which a randomly chosen driver is involved in a year. (a) (17 marks) Derive the probability mass function of X? (b) (3 marks) Find P(X = 2) if a = 7 and 2 = 3.2. a