I'm having some trouble figuring out this question:
The number of car accidents in Town A has mean $2.3$ car accidents per hour with standard deviation of $1.5$ car accidents per hour. It is known that the number of car accidents in Town B is $3$ times that of Town A. Given this information, what is the mean and variance of the number of car accidents in Town B?
Been stuck on this for a while and I'm just not really sure how to begin to approach this problem.