(Solved): 5. In the following discrete probability distribution below, the random variable X represents the n ...

5. In the following discrete probability distribution below, the random variable $X$ represents the number of cars an individual aged 16 years or older has driven before they are 18 years old. a. Compute the mean of the discrete random variable $X$. b. What is the probability that a randomly selected individual has driven in more than three cars?