The number of accidents in a city follows a Poisson process with a mean of 2 per day and the number X; of people involved in the ith accident has the distribution (independent) P{X; = k} = (k2 1)....

Extracted text: The number of accidents in a city follows a Poisson process with a mean of 2 per day and the number X; of people involved in the ith accident has the distribution (independent) P{X; = k} = (k2 1). Find the mean and variance of the number %3D 2* of people involved in accidents per week.